a.They need to elect a slate of officers including a president, vice president, recording secretary, corresponding secretary, treasurer, historian, and statistician. If each of the members can be elected to any of the positions and each member may only hold one position, how many different slates of officers can be elected

Mrs. Staviski will get 4 sections if she cuts a 2-foot long piece of yarn into 1/2-foot sections.

If Mrs. Staviski divides a 2-foot-long strand of yarn into 1/2-foot-long sections

We must divide the overall length of the yarn by the length of each segment to see how many sections will result:

2 feet long divided by 1/2 foot per segment equals (2*2) / 1 = 4 sections

Therefore, Mrs. Staviski will get 4 sections if she cuts a 2-foot long piece of yarn into 1/2-foot sections.

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The integral is convergent. To evaluate it, we use the formula for the integral of e^x, which is e^x + C. So, integrating e^-6p gives us (-1/6)e^-6p. Evaluating this from 0 to infinity, we get: (-1/6)e^-6(infinity) - (-1/6)e^0.

Since e^-6(infinity) approaches 0 as p approaches infinity, the first term becomes 0. Therefore, the integral evaluates to: (-1/6)e^0 = -1/6, So the quantity converges to -1/6.To determine whether the given integral is convergent or divergent, we need to analyze the integral: ∫[2, ∞] e^(-6p) dp.

To evaluate this integral, we first apply the Fundamental Theorem of Calculus. We find the antiderivative of e^(-6p) with respect to p, which is (-1/6)e^(-6p). Now, we need to evaluate the limit: lim (b → ∞) [(-1/6)e^(-6p)] [2, b].

When we take the limit as b approaches infinity, e^(-6p) approaches 0 because the exponent becomes increasingly negative. Thus, the integral is convergent.

To find the value of the convergent integral, we can calculate: ((-1/6)e^(-6*2)) - ((-1/6)e^(-6*∞)) = (-1/6)e^(-12) - 0 = (-1/6)e^(-12), So, the integral is convergent, and its value is (-1/6)e^(-12).

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Answer:

(a - 5) (a + 2)

Step-by-step explanation:

Answer:

(a – 5)(a + 2).

Step-by-step explanation:

To factorize a²– 3a – 10​, we need to find two numbers whose product is -10 and whose sum is -3. These numbers are -5 and 2. So we can write:

a² – 3a – 10 = (a – 5)(a + 2)

Therefore, the factorization of a²– 3a – 10 is (a – 5)(a + 2).

It is true that the Fisher LSD (Least Significant Difference) confidence interval and the t-test confidence interval may exhibit slight differences. These differences arise from the nature of the tests and their respective assumptions.

The Fisher LSD test is a multiple comparison technique that compares each pair of means after conducting an ANOVA (Analysis of Variance) test. This test is employed when the null hypothesis is rejected, and it helps determine which specific group means differ from one another. The Fisher LSD test assumes equal variances between groups and normality of the data.

On the other hand, the t-test confidence interval is used in a two-sample t-test, which compares the means of two independent groups to determine if there is a significant difference. The t-test can accommodate unequal variances through a variant called the Welch's t-test. It also assumes normality of the data.

The differences between the Fisher LSD and t-test confidence intervals can be attributed to several factors:

1. Multiple comparisons: The Fisher LSD test accounts for multiple comparisons among group means, while the t-test only considers a single comparison between two groups.

2. Assumptions: The Fisher LSD test assumes equal variances, whereas the t-test can be adapted to handle unequal variances.

3. Error rate control: Fisher LSD does not control the family-wise error rate, which may increase the chances of false positive findings when making multiple comparisons. In contrast, the t-test controls the error rate for a single comparison.

In summary, the Fisher LSD and t-test confidence intervals may differ due to the number of comparisons, assumptions about variances, and error rate control. These differences can impact the precision and interpretation of the intervals in specific situations.

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The correct frequencies for the test scores of the students is listed below as follows;

60-69 = 3

79-79 = 6

80-89 = 6

90-99 = 5

The total number of scores that where recorded by Mrs Smith on the given table above = 20

To determine the frequency, a range is given and the scores that fell within each range is determined.

Therefore the correct frequency for each range is as follows:

60-69 = 3

79-79 = 6

80-89 = 6

90-99 = 5

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The probability density function f(x) is given by f(x) = c(3x^2 - 8x - 5) for 0 < x < 1. The value of the constant c is -1/8. The cumulative distribution function of X is F(x) = (-1/8)(x^3 - 4x^2 - 5x).

The random variable X represents the portion of a flood insurance claim for flooding damage to a house, and To find the constant c, we need to ensure that the probability density function integrates to 1 over the specified interval, which is a fundamental property of probability density functions.

∫[0,1] c(3x^2 - 8x - 5) dx = 1

First, integrate the function without the constant c:

∫(3x^2 - 8x - 5) dx = (x^3 - 4x^2 - 5x)|[0,1] = (1 - 4 - 5) - (0) = -8

Now, multiply the constant c by the integral:

c(-8) = 1

Solve for c:

c = -1/8

Thus, the value of the constant c is -1/8.

Next, we find the cumulative distribution function (CDF) F(x) of X, which is the integral of the probability density function from 0 to x:

F(x) = ∫[-1/8 (3t^2 - 8t - 5)] dt, where the integration is done over the interval [0, x].

Upon integrating and applying the limits, we get:

F(x) = (-1/8)(t^3 - 4t^2 - 5t)|[0,x] = (-1/8)(x^3 - 4x^2 - 5x)

So the cumulative distribution function of X is F(x) = (-1/8)(x^3 - 4x^2 - 5x).

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The cruising speed of the plane is 468 mph and the speed of the wind is 52mph

To solve this problem, we can use the formula:
distance = rate x time

Let's let "r" be the cruising speed of the plane and "w" be the speed of the wind. Then we can write:

1040 = (r + w) x 2    (since the plane is flying with a tailwind)
1040 = (r - w) x 2.5  (since the plane is flying against the wind)

Now we can solve for r and w. Let's start by solving for r in the first equation:

1040 = 2r + 2w
520 = r + w

Next, let's solve for r in the second equation:

1040 = 2.5r - 2.5w
416 = r - w

Now we have two equations with two variables:

520 = r + w
416 = r - w

We can solve for r by adding the two equations:

936 = 2r
r = 468

Now that we know r, we can solve for w by substituting into either equation:

520 = 468 + w
w = 52

The cruising speed of the plane is 468 mph and the speed of the wind is 52mph

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Amir's search for Hassan and the blue kite occurs in the novel "The Kite Runner" by Khaled Hosseini. The two men Amir encounters mock Hassan primarily because of his Hazara ethnicity, which is a marginalized and discriminated group in Afghanistan.

Hassan's social status is further complicated by the fact that he is Amir's family's servant, emphasizing the existing class differences between them. The novel portrays the social and cultural tensions in Afghanistan during that period, highlighting the disparities between the dominant Pashtun ethnic group, which Amir belongs to, and the Hazara minority. These disparities manifest in various forms of prejudice, including mockery, which further emphasizes the power dynamics at play.

In this particular scene, the men's mockery of Hassan is an attempt to belittle and demean him, thereby reinforcing the status quo that supports their own position within the social hierarchy. Amir's reaction to the situation also sheds light on his  internal struggle with loyalty, friendship, and personal identity.

In conclusion, the men mock Hassan due to his Hazara ethnicity and his position as a servant in Amir's household, reflecting the societal prejudices and power imbalances present in Afghanistan during that time.

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Proving consistency involves demonstrating that a set of requirements can be met simultaneously, while proving inconsistency requires showing that there is at least one conflict or inconsistency. This fundamental difference in approach makes proving inconsistency an easier task than proving consistency.

In general, it is easier to show that a set of requirements is inconsistent rather than to prove that they are consistent because inconsistency requires only a single counterexample, while consistency requires showing that all possible combinations of requirements are compatible with each other.

To prove that a set of requirements is consistent, one needs to demonstrate that all of the requirements can be met simultaneously without any conflicts. This can be a challenging task, particularly when dealing with complex and interdependent requirements.

On the other hand, to show that a set of requirements is inconsistent, one only needs to find a single example where two or more requirements conflict with each other or cannot be met simultaneously. This can be a much simpler and more straightforward process, as it only requires finding a single problem rather than searching for a solution that satisfies all requirements.

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For a sample for manufacturing process will increase the mean acceptable transmission distance, the correct test statistic value is t = 2.36. So, option(a) is right one.

We have a sample of a type of light-carrying fiber optic cable, and the research team wants to investigate whether modifications in the manufacturing process will increase the diameter. Then sample mean, [tex] \bar X [/tex] = 60.3 km

Population mean, μ = 58 km

Standard deviation, σ = 4.35 km.

Sample size, n = 20

Let's consider the population is normally distributed. We have to determine the value of test statistic that is t-score.

Test statistic : From the normal distribution the t-score formula for mean difference is, [tex]t =\frac{ \bar X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

Substitute all known values in above formula, [tex]t = \frac{ 60.3 - 58 }{\frac{ 4.35}{\sqrt{20}}} [/tex]

[tex]= \frac{ 2.3 }{ \frac{4.35}{\sqrt{20}}} [/tex]

= 2.3646 ~ 2.36

Hence, required test statistic value is 2.36.

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Complete question:

A certain type of fiber optic cable transmits light at a mean distance of 58 km. A research team wishes to investigate if a modification in the manufacturing process will increase the mean acceptable transmission distance. A sample of twenty batches of cable produced under the new process is tested. The sample mean is 60.3 km with a sample standard deviation of 4.35 km. Assume the population is normally distributed. The correct test statistic is

a) t= 2.36

b) t=−2.36

c) z=4.45

d) z=2.36

e) z=−2.36

The ratio of cranberry juice to apple juice to orange juice in its simplest form is 1 : 2 : 3.

We have,

Let's assume that the drink contains a total of x units of liquid.

Now,

1/3 of the drink is apple juice, which is (1/3)x units of apple juice.

1/2 of the drink is orange juice, which is (1/2)x units of orange juice.

The rest of the drink is cranberry juice, which is x - (1/3)x - (1/2)x = (1/6)x units of cranberry juice.

To write the ratio of cranberry juice to apple juice to orange juice in its simplest form, we need to express these quantities in terms of a common unit.

So,

(1/3)x = (2/6)x

(1/2)x = (3/6)x

(1/6)x = (1/6)x

Therefore,

The ratio of cranberry juice to apple juice to orange juice is:

(1/6)x : (2/6)x : (3/6)x

Simplifying this ratio by dividing all terms by the greatest common factor of 6.

1 : 2 : 3

Therefore,

The ratio of cranberry juice to apple juice to orange juice in its simplest form is 1 : 2 : 3.

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The average monthly power usage in the electrical maintenance shop is 51.93 kilowatt-hours.

The average monthly power usage in the electrical maintenance shop can be calculated by adding the power usage of each month and dividing by the number of months.

April: 42.2 kWh
May: 59.25 kWh
June: 53.63 kWh
July: 62.4 kWh
August: 63.75 kWh
September: 30.35 kWh

Total power usage: 42.2 + 59.25 + 53.63 + 62.4 + 63.75 + 30.35 = 311.58 kWh

Number of months: 6

Average monthly power usage: 311.58 kWh / 6 = 51.93 kWh

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According to the general equation for conditional probability if P(A∩B)=4/7 and P(B)=7/8, then P(A | B) = 32/49.

We have the general equation of conditional probability as,

P(A | B) = P(A ∩ B) / P(B)

Here it is given that,

P(A ∩ B) = 4/7

P(B) = 7/8

Substituting the given values,

P(A | B) = 4/7 ÷ 7/8

            = 4/7 × 8/7

            = 32/49

Hence the required probability is 32/49.

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The intrinsic rate of increase depends on the initial population size, but for any given population size, it is 11.5 times the population size

The intrinsic rate of increase (r) is given by the difference between the birth rate (b) and the death rate (d), divided by the average population size (N) over the same period of time:

r = (b - d) / N

In this case, the birth rate is 6 beetles per year, and the death rate is 0.5 beetles per year. We can assume that the population is growing exponentially, which means that the average population size over the year is half the initial population size. Therefore:

N = N0 / 2

where N0 is the initial population size.

Putting it all together, we get:

r = (6 - 0.5) / (N0 / 2)

r = 11.5 / N0

The intrinsic rate of increase depends on the initial population size, but for any given population size, it is 11.5 times the population size. For example, if the initial population size is 100 beetles, the intrinsic rate of increase is: r = 11.5 / 100 = 0.115 per year

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Therefore, the mean of the sampling distribution of the difference in sample means is 0. The mean of a fair six-sided die is (1+2+3+4+5+6)/6 = 3.5.

The mean of the sampling distribution of the difference in sample means can be calculated as follows:
- The mean of the first ten rolls can range from 1 to 6, with an expected value of (1+2+3+4+5+6)/6 = 3.5.
- Similarly, the mean of the remaining five rolls can also range from 1 to 6, with an expected value of 3.5.
- The difference in sample means, can range from -3.5 to 3.5.
To find the mean of the sampling distribution, we need to find the expected value.
E( ) = E( - )
= E( ) - E( )
= 0
let's consider the terms given: a fair six-sided die, 15 total rolls, the average of the first 10 rolls (let's call this A), and the average of the remaining 5 rolls (let's call this B).
The mean of a fair six-sided die is (1+2+3+4+5+6)/6 = 3.5. Since both sets of rolls (A and B) are drawn from the same distribution, their individual means will also be 3.5.
The mean of the sampling distribution of the difference in sample means (A-B) is the difference between the means of A and B. Since both A and B have the same mean (3.5), the mean of the sampling distribution of the difference in sample means is:
3.5 - 3.5 = 0

Therefore, the mean of the sampling distribution of the difference in sample means is 0.

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To find the probability of a person with "some college or an associate's degree" and in the labor force being employed, we need the following information: the number of people with that education level who are employed and the total number of people with that education level in the labor force.

Let's assume we have the following data (these are just example numbers, you can replace them with actual data if you have it):

1. Number of people with "some college or an associate's degree" who are employed: 400
2. Total number of people with "some college or an associate's degree" in the labor force: 500

Step 1: Divide the number of employed people (400) by the total number of people in the labor force (500).
Probability = (Number of employed people with some college or an associate's degree) / (Total number of people with some college or an associate's degree in the labor force)

Step 2: Calculate the probability
Probability = 400 / 500 = 0.8

Based on the given data, the probability that a person who has completed some college or an associate's degree and is in the labor force is employed is 0.8 or 80%. This means that 80% of individuals with that education level in the labor force are employed.

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The sole inference whereby the total amount of figures on the cube will be divisible by three.

The cube’s faces are labeled as A, B, C, D, E, and F.

It’s apparent that pairs of opposite sides combine to equal the same value: namely A+F=S, B+E=S, and C+D=S.

Thus, determining the summation of all values entails adding each group of pairs together: (A+F) + (B+E) + (C+D) = 3S.

Unless additional information is provided, the sole inference whereby the total amount of figures on the cube will be divisible by three.

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To determine the number of receptacles required for the bathroom counter space, we need to refer to the electrical code guidelines. The specific requirements may vary depending on the country or region, as well as the local electrical codes in place.

In the United States, according to the National Electrical Code (NEC), at least one 20-ampere-rated branch circuit is required to serve the bathroom receptacles. The code specifies that this circuit should be dedicated solely to the bathroom receptacles and should not serve any other areas.

The NEC also states that at least one receptacle outlet is required on the bathroom countertop. This receptacle should be located within 3 feet of the outer edge of the countertop and should be installed above the countertop surface. This means that a receptacle needs to be placed within reach of the bathroom counter space.

Considering the given information that the bathroom counter space is seven feet, including the sink, we need to install at least one receptacle outlet on the countertop within 3 feet of the outer edge. Depending on the specific layout and size of the counter space, additional receptacles may be required to meet the code's requirements for accessibility and convenience.

To ensure compliance with local electrical codes and safety standards, it is advisable to consult with a licensed electrician or refer to the specific electrical codes applicable in your area. They will be able to provide accurate guidance based on the local requirements and regulations.

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The correct answer is a) Yes, (27.950, 34.250) covers the true mean. We can reasonably conclude that the interval (27.950, 34.250) covers the true mean with a high degree of certainty.

Based on the information provided by the employee of the College Board, we can say with 97% confidence that the true mean number of correct answers falls within the interval (27.950, 34.250). This means that there is only a 3% chance that the true mean falls outside of this interval. A confidence interval is a range of values that is likely to contain the true population parameter, in this case, the true mean. Since the confidence interval is at a 97% level, we can be 97% confident that the true mean lies within this range. Therefore, the best answer is that (27.950, 34.250) does cover the true mean.

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There are over 6 quadrillion ways to make starting hands for Derek, Margaret, and Lenny!

We can start by finding the number of ways to choose 7 cards out of the 52 for Derek, then the number of ways to choose 7 cards out of the remaining 45 for Margaret, and then the remaining cards (which will form Lenny's hand).

The number of ways to choose 7 cards out of 52 is:

C(52,7) = 133,784,560

Once Derek has his 7 cards, there are 45 cards remaining, so the number of ways to choose 7 cards for Margaret is:

C(45,7) = 45,379,620

Finally, Lenny gets the remaining cards, so there is only one way to choose his hand.

Therefore, the total number of ways to make starting hands for all three players is:

133,784,560 x 45,379,620 x 1 = 6,081,679,822,404,800

So there are over 6 quadrillion ways to make starting hands for Derek, Margaret, and Lenny!

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The correct interpretation of the 95% confidence interval for 20-year-old homes with 3000 square feet of area is that we are 95% confident that the true mean sales price of 20-year-old homes with 3000 square feet of area falls between $200,000 and $230,000 (in $1000s).

A confidence interval provides a range of values within which we can be a certain level of confident (e.g. 95%) that the true population mean falls. In this case, the interval [200, 230] (in $1000s) is a range of values that is likely to contain the true mean sales price of 20-year-old homes with 3000 square feet of area with a 95% level of confidence.

We cannot say for certain that the true mean sales price falls within this interval, but we can be reasonably confident that it does based on the data and the method used to calculate the confidence interval.

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Correct answer is the option (2) 1 yd of carpet for $0.51, is the best buy as it has the lowest cost per yard of carpet.

To determine the best buy among the three options, we need to calculate the cost per yard of carpet for each option.

Option 1: 3 yd of carpet for $1.90

Cost per yard = $1.90 ÷ 3 = $0.63 per yard

Option 2: 1 yd of carpet for $0.51

Cost per yard = $0.51 per yard

Option 3: 2 yd of carpet for $1.08

Cost per yard = $1.08 ÷ 2 = $0.54 per yard

Therefore, from the above solutions, we can see that the second option, i.e., 1 yd of carpet for $0.51, is the best buy as it has the lowest cost per yard of carpet.

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Having the right product means that the software being developed meets the needs and requirements of its intended users.

This involves identifying the target audience, understanding their needs, and designing the software in a way that meets those needs. In addition to functionality, having the right product also means ensuring the software is user-friendly, reliable, and efficient. Achieving the right product requires effective communication between developers and stakeholders, as well as ongoing testing and feedback to ensure that the software meets its intended purpose.

Ultimately, having the right product leads to greater user satisfaction, increased productivity, and improved overall performance of the software.

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The percentage of the sheets with no air bubbles is given as follows:

13.53%.

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following mass probability function:

[tex]P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}[/tex]

The parameters are listed and explained as follows:

The mean for this problem is given as follows:

[tex]\mu = 2[/tex]

The proportion of these sheets with no air bubbles is P(X = 0), hence it is given as follows:

P(X = 0) = e^-2 = 0.1353 = 13.53%.

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The travel website can effectively provide information comparing hotel costs versus the quality ranking of hotels in New York City, helping users make informed decisions about their accommodations.

To summarize the data comparing hotel costs versus the quality ranking of hotels in New York City for a travel website, one effective method would be to create a comparison chart or graph.

Step 1: Gather the data on hotel costs and quality rankings for various hotels in New York City. Ensure that the source of the quality rankings is reliable and consistent.

Step 2: Organize the data in a table or spreadsheet, with columns for hotel name, cost, and quality ranking.

Step 3: Create a scatter plot or bar chart to visually represent the data. On the x-axis, display the quality ranking, and on the y-axis, display the hotel cost. Each data point represents a specific hotel.

Step 4: Analyze the chart to identify trends, such as the relationship between cost and quality ranking. This will provide valuable information for the travel website's users.

By following these steps, the travel website can effectively provide information comparing hotel costs versus the quality ranking of hotels in New York City, helping users make informed decisions about their accommodations.

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We can estimate that B × T is roughly 0.57, or equivalently, T is roughly 0.57 / B.

Assuming that the rumor spreads according to the logistic law, we can use the following formula to estimate the number of people who will hear the rumor by 5 pm:

[tex]P(t) = K / (1 + A \times e^{(-B\times t)})[/tex]

where:

P(t) is the number of people who have heard the rumor by time t,

K is the maximum possible number of people who can hear the rumor (in this case, the total population of the town, which is 10,000),

A and B are constants that determine the shape of the logistic curve, and

e is the mathematical constant approximately equal to 2.71828.

To solve for A and B, we need to use the information given in the problem. We know that at noon, 4,000 people have heard the rumor. Let's assume that "noon" corresponds to t=0 (i.e., we start counting time from noon). Then we have:

[tex]P(0) = 4,000 = K / (1 + A \times e^{(-B\times 0)})[/tex]

4,000 = K / (1 + A)

1 + A = K / 4,000

We also know that the logistic law predicts that the number of people who hear the rumor will eventually level off and approach the maximum value K. Let's assume that the leveling off occurs after a long time T (which we don't know). Then we have:

P(T) = K

We can use these two equations to solve for A and B:

A = (K / 4,000) - 1

B = ln((K / 4,000) / (1 - K / 4,000)) / T

where ln denotes the natural logarithm.

Unfortunately, we don't know the value of T, so we can't calculate B directly. However, we can make an educated guess based on the shape of the logistic curve. Typically, the curve starts out steeply and then levels off gradually. Therefore, we can assume that the time it takes for the curve to reach 90% of its maximum value is roughly equal to T. In other words, we want to solve for T such that:

[tex]P(T) = 0.9 \times K[/tex]

Substituting the expression for P(t) into this equation, we get:

[tex]0.9 \times K = K / (1 + A \times e^{(-BT)})\\0.9 = 1 / (1 + A \times e^{(-BT)})\\1 + A \times e^{(-BT)} = 1 / 0.9\\A \times e^{(-BT)} = 1 / 0.9 - 1\\e^{(-B\times T)} = (1 / 0.9 - 1) / A\\B \times T = -ln((1 / 0.9 - 1) / A)[/tex]

Plugging in the values for K and A, we get:

A = (10,000 / 4,000) - 1 = 1.5

[tex]B \times T = -ln((1 / 0.9 - 1) / 1.5) = 0.57[/tex]

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Answer:

6 > 2x + y

To find the slope and y-intercept for this linear inequality, we need to write it in slope-intercept form, which is y = mx + b, where m is the slope and b is the y-intercept.

Rearranging the given inequality, we get:

y > -2x + 6

Comparing this with y = mx + b, we can see that the slope is -2 and the y-intercept is 6.

So, the slope is m = -2 and the y-intercept is b = 6.

To graph this linear inequality, we can draw the line y = -2x + 6 (which has a slope of -2 and y-intercept of 6) as a dashed line (since y > -2x + 6, not y = -2x + 6). Then we shade the region above the line, since all the points in that region satisfy the inequality y > -2x + 6.

x < 3y - 6

Again, we need to write this inequality in slope-intercept form to find the slope and y-intercept. Rearranging, we get:

3y > x + 6

Dividing both sides by 3, we get:

y > (1/3)x + 2

So, the slope is m = 1/3 and the y-intercept is b = 2.

To graph this linear inequality, we draw the line y = (1/3)x + 2 (which has a slope of 1/3 and y-intercept of 2) as a dashed line (since x < 3y - 6, not x = 3y - 6). Then we shade the region below the line, since all the points in that region satisfy the inequality x < 3y - 6.

11 is the distance between given two numbers.

To find the distance between 7 and -4,

we need to find the absolute value of the difference between them:

|7 - (-4)| = |7 + 4| = |11| = 11

Therefore, the distance between 7 and -4 is 11.

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Answer:  A and D

Step-by-step explanation:

For the function to be linear for your problem, you could see if the x increases each time by the same amount and separately looking at the y the y needs to be increasing by the same amount.

A.  Correct  If I add 3 to each for x's, it's ok, and for the y's i subtract 4 each time

B.  Incorrect.  The x's look ok because 2 is subtracted each time but y's it starts to subtract 4 then it subtracts 5 for the next one

C. Incorrect.   x's are ok but then y's subtract 2 and the last one subtracts 1

D.  Correct.  x's, each add 1,  and y's each subtract 3