The linear function y=2x+28 models the average cost of a haircut in a certain city, where y, is the average price of a haircut x years after 2000. Find the slope for the model. Then describe what this means in terms of the unit rate of change in the average cost of a haircut over time.

Answers

Answer 1

Answer:

The slope of the model is [tex]m = 2\,\frac{USD}{yr}[/tex].

The value of the slope indicates that the average cost of a hair cut is increased by 2 US dollars each year.

Step-by-step explanation:

We have to notice that given function is a linear function, that is, a first order polynomial, whose standard form is described below:

[tex]y =m\cdot x + b[/tex]

Where:

[tex]m[/tex] - Slope, dimensionless.

[tex]x[/tex] - Independent variable, dimensionless.

[tex]y[/tex] - Dependent variable, dimensionless.

[tex]b[/tex] - y-Intercept, dimensionless.

In this case, we use the linear function [tex]y = 2\cdot x + 28[/tex], where [tex]x[/tex] is the time after 2000, measured in years, and [tex]y[/tex] is the average cost of a hair cut. The slope of the model is [tex]m = 2\,\frac{USD}{yr}[/tex].

The value of the slope indicates that the average cost of a hair cut is increased by 2 US dollars each year.


Related Questions

Will give brainliest, like 5 stars, comment and 5 points
The table represents the relationship between a length measured in meters and the same length measured in kilometers.

Complete the table.

Answers

Answer:

3,500=3.5

500=0.5

75=0.075

1=0.001

x=x÷1000

IMPORTANT!
I will mark brainliest to first answer if it’s right.
I set the point value to 40!!!

Answers

Answer:

m = 5

p = 10

Step-by-step explanation:

Part A

The dashes on the lines mean that the lines are equal in length.

Therefore, IJ = IH and HK = KJ

So as IJ = IH

⇒ 10 = 2m

⇒ m = 10 ÷ 2

m = 5

Part B

The line IK is the bisector of angle I since IJ = IH and HK = KJ

Therefore, 2p - 5 = p + 5

subtract p from both sides:

⇒ 2p - 5 - p = p + 5 - p

⇒ p - 5 = 5

Add 5 to both sides:

⇒ p - 5 + 5 = 5 + 5

p = 10

100 BRAINLY POINTS!!!

The harvest results of a farm are shown in the graph below.


Which equation best models the relationship between the amount of compost used, x, and the harvest yield, y ?

A. y = x

B. y = 200x

C. y = x + 200

D. y = 200x + 200

EXPLAIN YOUR ANSWER
SHOW YOUR WORK

Answers

Note:-

Graph must not be drawn to scale so taken imaginary coordinates most near to accurate

So the cordinates are

(0,200)(200,400)(400,600)(600,800)

Mark the change between x and y

400+200=600200+200=4000+200=200

So

the relationship is

y=200+x

Option C

Answer:

C.  [tex]y=x+200[/tex]

Step-by-step explanation:

Line of best fit (trendline) : a line through a scatter plot of data points that best expresses the relationship between those points.

All the given options for the line of best fit are linear equations.

Therefore, we can add the line of best fit to the graph (see attached), remembering to have roughly the same number of points above as below the line.

Linear equation:  [tex]y=mx+b[/tex]

(where [tex]m[/tex] is the slope and [tex]b[/tex] is the y-intercept)

From inspection of the line of best fit, we can see that the y-intercept (where x = 0) is approximately 200.  So this suggests that either option C or option D is the solution.

We can also see that slope (gradient) is approximately 1, as for every +100 increase in x, y increases by +100.

[tex]\textsf{slope = rate of change}=\sf\dfrac{change \ in \ y}{change \ in \ x}=\dfrac{100}{100}=1[/tex]

Therefore, this suggests that C is the solution and that the closest approximation to the line of best fit is [tex]y=x+200[/tex]

hello people ~
factorise:21x²-43x-14​

Answers

Answer:

[tex]\displaystyle [7x + 2][3x - 7][/tex]

Step-by-step explanation:

Find two quantities that when differed to 43, they also multiply to 294. Those will be 6 and 49. The TINIER quantity gets the plus symbol because the B-value is −43, therefore 49 gets the minus symbol, leaving 6 with the plus symbol. In extension, sinse we have a leading coefficient greater than one, we need to take extra procedures. Here is how it is done:

[tex]\displaystyle 21x^2 - 43x - 14 \\ \\ [21x^2 + 6x] - [49x - 14] \\ 3x[7x + 2] - 7[7x + 2] \\ \\ \boxed{[7x + 2][3x - 7]}[/tex]

I am joyous to assist you at any time.

FREE BRAINLIEST
Write the inequality that matches the situation. Amanda rented a bike from Shawna's Bikes. They charge $2 per hour, plus a $10 fee. Amanda paid less than $27.

Answers

Here is the answer ......

A fair six-sided die is rolled and then a coin is flipped twice.
Calculate the probability of getting a 2 on the die followed by two heads from the
coin.
Give your answer as a fraction in its simplest form.

Answers

Answer:

1/24

Step-by-step explanation:

First, we need to create a sample space to list the possible outcomes.

S = {1HH, 1HT, 1TH, 1TT, 2HH, 2HT, 2TH, 2TT, 3HH, 3HT, 3TH, 3TT, 4HH, 4HT, 4TH, 4TT, 5HH, 5HT, 5TH, 5TT, 6HH, 6HT, 6TH, 6TT}

No. of total outcomes = 4 x 6 = 24 outcomesOnly one outcome has getting a 2 on the die followed by two heads on the coinP(2 on die, then two heads) = 1/24

Solution :-

1/24

Does anyone know the answers to these riddles?

Answers

Answer:

1. Something along they will cheetah (kind of like they will cheat)

2. Because it was a boxer

Answer:

1. They might be cheetahs!

2.Becasue it was a boxer!

Step-by-step explanation:

Hope this helps!

Brainliest is appreciated!

Have a great day!

~Mitsuna

If AB = 10 and B lies at -6, where could A be located?

Answers

Answer:

26

Step-by-step explanation:

AB to B is 16 units, so it's reasonable to assume that A to AB is 16 units as well.

help asap!! just need it checked!

Answers

Answer:

Step-by-step explanation:

correct-

Answer:

It's wrong the first answer is correct

what is the length of PQ round to the nearest tenth of a unit p(-6 , 2) (-7 ,4)

Answers

Answer:

-73

please keeps as Brainly list

Answer:

≈ 2.2 units

Step-by-step explanation:

Calculate the distance d using the distance formula

d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]

with (x₁, y₁ ) = (- 6, 2) and (x₂, y₂ ) = (- 7, 4)

d = [tex]\sqrt{(-7+6)^2+(4-2)^2}[/tex]

   = [tex]\sqrt{(-1)^2+2^2}[/tex]

   = [tex]\sqrt{1+4}[/tex]

    = [tex]\sqrt{5}[/tex] ≈ 2.2 ( to the nearest tenth )

Mathematicians at the University of Hawaii have tried to approximate the total number of grains of sand on the world's beaches. They calculated 7,500,000,000,000,000,000, or seven quintillion five hundred quadrillion. How is this number expressed in scientific notation?

Answers

Answer: Because numbers are infinite. Explanation: you can count to 100 but the numbers dont stop there, if you were to count contentiously then you would find yourself in a loop of numbers.

1 2 3 4 5 6 7 8 9 10 | 11 12 13 14 15 16 17 18 19 20

Because as you can see the numbers do not change 1 2 3 4 5 6 7 8 9 are just in different places

7.5 × 10¹⁸

In order to transform in standard form /  scientific notation.

Count the zeros in a number.

the first number should be an absolute value like: a * b^10

thus in scientific notation: 7.5 × 10¹⁸

another example:

number: 650,000,000 scientific notation: 6.5 × 10⁸

What is the y-intercept of 5x+4y=−40 ?
A.(8,−10)
B.(0,−10)
C.(0,8)
D.(−10,0)

Answers

Answer:

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

5x + 4y = - 40 ( subtract 5x from both sides )

4y = - 5x - 40 ( divide all terms by 4 )

y = - [tex]\frac{5}{4}[/tex] x - 10 ← in slope- intercept form

with y- intercept c = - 10 ⇒ (0, - 10 ) → B

Step-by-step explanation:

To find the y intercept of the line we must first write the equation in standard form which is

y = mx + c

where

m is the slope

c is the y intercept

So we have

5x + 4y = - 40

4y = -5x - 40

Divide both sides by 4

We have the equation as

[tex]y = - \frac{5}{4} x - 10[/tex]

From the question the y intercept is - 10

We have the final answer as

( 0 , - 10)

Hope this helps you

how many burgers can make from 1 billion cows ?

Answers

That is not enough info: to answer the question u will need the weight
If the cows weigh 50.0 pounds then 59 burgers per cow

Answer:

1.186836*10^12 burger

Step-by-step explanation:

first, there is not even 1billion cows on earth, according to statista.com, there are 989.03 million billion cows on earth in 2019. according to the genus on the quora, you can make 1200 burger from 1 cow, so 989,030,000*1200

sign, 1.186836e+12.

A cylinder has a height of 9 meters and a radius of 8 meters. What is its volume? Use ​ ≈ 3.14 and round your answer to the nearest hundredth.

Answers

Answer:

1808.64

Step-by-step explanation:

Given parameters:

Height of  cylinder = 9 meters

Radius = 8 meters

To Find:

Volume of the cylinder = ?

Solution:

The volume of cylinder is given as;

Volume  = π r ² h

9(3.14)8^2=1808.64

[RevyBreeze]

Solution:

Given:

Height of cylinder = 9 metersRadius of cylinder = 8 meters

Recall that the volume of the cylinder is πr²h. Now, let's use the formula to find the volume of the cylinder.

[tex]\bullet \rightarrow \pi r^{2} h = \text{Volume of cylinder}[/tex]

[tex]\bullet \rightarrow (\pi)(r^{2})( h) = \text{Volume of cylinder}[/tex]

[tex]\bullet \rightarrow (3.14)(8^{2})( 9) = \text{Volume of cylinder}[/tex]

[tex]\bullet \rightarrow (3.14)(64)( 9) = \text{Volume of cylinder}[/tex]

[tex]\bullet \rightarrow \boxed{1808.64 \ m^{2} = \text{Volume of cylinder}}[/tex]

If the graph of f(x)=x2, how will the graph be affected if the coefficient of x2 is changed to 3?

Answers

Answer:

435

Step-by-step explanation:

Transformations are used to change the orientation of a function to a new function. The graph of [tex]f(x) = x^2[/tex] will have its parabola widened when it changes to [tex]g(x) = 3x^2[/tex]

Given that

[tex]f(x) = x^2[/tex]

If the new function is:

[tex]g(x) = 3x^2[/tex]

It means that f(x) has been vertically translated by a scale factor of 3.

The graph will be affected such that the parabola of [tex]f(x) = x^2[/tex] will become widen when the coefficient changes to 3 i.e. [tex]g(x) = 3x^2[/tex].

See attachment for the graph of f(x) and g(x)

Read more about function transformation at:

https://brainly.com/question/12865301

How can you show that 20% of $165.00 is $33.00?

Can someone help me please thanks

Answers

Answer:

True

Step-by-step explanation:

0.20*165=33

Answer:

With the definition of percentage. 20% of something means multiplying it by 20 and then dividing the result by 100. In our case, [tex]165.00 \times 20 \div 100 = 33.00[/tex]

Alternatively, convert it into a fraction. 20 is 1/5 of 100 (alternatively, you need to pick 20 five times to get 100), and then you just multiply

[tex]165.00 \times \frac15 = 33.00[/tex]

Manny’s Music Rental charges a fee of $40 plus $25 per month to rent a saxophone. Sid’s Saxophones charges $25 plus $30 per month to rent the same saxophone. Write the system of equation the represents the cost of Sarah's rental shop and another equation for David's rental shop.

Answers

Answer:

Manny's Music Rental:  y = 40 + 25x

Sid's Saxophones:   y = 25 + 30x

Step-by-step explanation:

Let x = number of months

Let y = total cost of renting a saxophone

Manny's Music Rental:  y = 40 + 25x

Sid's Saxophones:   y = 25 + 30x

como resuelvo (×-8)(×+8​

Answers

Answer:

The answer is zero(0) because x is the same and -8 + 8 would equal 0

Step-by-step explanation:

The L.C.M of 15 and 25 is what? ​

Answers

Answer:

75 is the l.c.m of 15 and 25

explanation:

multiples:

15 - 15, 30, 45, 60, 75

25 - 25, 50, 75

Therefore, 75 is the l.c.m of 15 and 25 which is divisible by both numbers.

Answer:

75

Step-by-step explanation:

Prime factorization

15 = 5 x 3

25 = 5²

LCM (15, 25) = 5² x 3

= 25 x 3

= 75

I need help with number 3

Answers

Answer:

a) 8 apples

b) 5 oranges

c) 2 oranges and 6 apples

Step-by-step explanation:

a) 8 apples × 1$ = 8$ < 10$

b) 5 oranges × 2$ = 10$

c) 2 oranges × 2$ = 4$

6 apples × 1$ = 6$ (4+6=10)

Answer:

(4 apples, 4 oranges)(4 apples, 3 oranges)(6 apples, 2 oranges)

Step-by-step explanation:

The problem scenario gives rise to two equations. One describes the total number of fruit. It is plotted in blue. The other describes the total cost. It is plotted in red.

a)

The total number of fruit will be 8 at any blue dot. (It will not cost $10 if that dot is not also red.) One such total is (4 apples, 4 oranges)

__

b)

The total cost will be $10 at any red dot. (The fruit count will not be 8 if that dot is not also blue.) One such cost is (4 apples, 3 oranges)

__

c)

The cost for 8 pieces of fruit will be $10 where the blue and red dots are plotted at the same point: (6 apples, 2 oranges)

A box contains:

3 red crayons
7 blue crayons
4 yellow crayons
8 green crayons
2 black crayons
1 orange crayon
A crayon is chosen at random and replaced 50 times. What is a reasonable prediction for the number of times a blue or orange crayon will be drawn?

Answers

Answer:

16 times

Step-by-step explanation:

We first have to find the total amount of crayons:

[tex]3+7+4+8+2+1=25[/tex]

That means that the box contains a total of 25 crayons. Of those 25 crayons, 7 are blue and 1 is orange. That means every time one crayon is chosen from the box, there is an 8 in 25 chance it will be blue or orange. We can represent that chance as a fraction: [tex]\frac{8}{25}[/tex]

That [tex]\frac{8}{25}[/tex] chance occurs each time ONE crayon is chosen, so if we want to know how many times blue or orange will be chosen after 50 times, we can multiply that chance by 50.

[tex]\frac{8}{25}*50=400/25[/tex]

Then you simplify the fraction:

[tex]\frac{400}{25}=16[/tex]

That means that if you pull crayons from the box 50 times, a blue or orange crayon will be likely drawn around 16 times.

As shown in the figure below, Amanda is looking at a tree that is leaning at an angle of 79° with respect to the ground. The angle of elevation from where
Amanda is standing to the top of the tree is 43°. The length of the tree is 66 feet. Find the distance, x, from Amanda to the base of the tree. Round your answer
to the nearest tenth of a foot.
661
feet
х
x
5
2
?

Answers

Answer:

3 plus 2 is 5

Step-by-step explanation:

the f tear is known to you

is (5,9) a solution to y=3x-6? Explain or show how you know.

Answers

Answer:

Yes

Step-by-step explanation:

Plug in the coordinate (5,9) into the equation

9=3(5)-6

9=15-6

9=9

The y-intercept is when the line
crosses the y-axis, so when X
=
Oy = 3(0) + 6 = 6,

72.7/30 simplified
And 42.7/30 simplified

Answers

For 72.7/30 is 2.009 or 2 0.9/10
For 42.7/39 is 2 1.7/30

Answer:

(1.)2.423

(2.) 1.423

Step-by-step explanation:

What is the slope of the line that passes through the points (–1, 3) and (5, 7)?

Answers

Answer:

6/4 or 1.5

Step-by-step explanation:

Lesson 1 starts at 8:35 and each lesson lasts 60 minutes. There are 4 lessons and there is a 15 minute break between lesson 2 and 3

Answers

1250
Is the answer I think

Jack's father is three times older than Jack. Five years ago, the sum of their ages was 34. How old is Jack's father now?.

Answers

Jacks father is 3x older than jack, 5 years ago the sum was 34

Jack = 3 x j = 3j

J is 11 years old

The acceleration of a Maserati (sports car) is proportional to the difference between 250 km/h and its velocity. If the car can accelerate from rest to 100 km/h in 10 s, how long will it take for the car to accelerate from rest to 200 km/h?

Answers

Answer:

a) The differential equation for the velocity is given by

(dv/dt) = k(250 - v)

b) v(t) = 250 - e⁽⁵•⁵² ⁻ ᵏᵗ⁾

With units of km/h

Step-by-step explanation:

Acceleration, a ∝ (250 - v)

But acceleration is widely given as dv/dt

(dv/dt) ∝ (250 - v)

(dv/dt) = k(250 - v)

where k = constant of proportionality

(dv/dt) = k(250 - v)

b) (dv/dt) = k(250 - v)

dv/(250 - v) = k dt

∫ dv/(250 - v) = ∫ k dt

- In (250 - v) = kt + c (where c is the constant of integration)

v(0) = 0; meaning, at t = 0, v = 0

- In 250 = 0 + C

c = - In 250 = - 5.52

- In (250 - v) = kt - 5.52

In (250 - v) = 5.52 - kt

250 - v = e⁽⁵•⁵² ⁻ ᵏᵗ⁾

v = 250 - e⁽⁵•⁵² ⁻ ᵏᵗ⁾

With units of km/h

i hope this work for you

and sory if im wrang

What is the equation in slope-intercept form of a line with
3
slope - and y-intercept –7?
3
y7
O A) y=xx+7
OB) v=xx-7
OC) y=x+7
)
X
2.
y
OD) y=-X-7

Answers

Answer:

B

Step-by-step explanation:

Just did the test. Wish you luck!!

The equation of line is y = ( 3/2 )x - 7 , where the slope is m = 3/2

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of line be represented as A

Now , the value of A is

Now , the slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Substituting the values in the equation , we get

Slope m = 3/2

The y-intercept is b = -7

And , equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

So , y = ( 3/2 )x - 7

Hence , the equation of line is y = ( 3/2 )x - 7

To learn more about equation of line click :

https://brainly.com/question/14200719

#SPJ7

Caleb has a bag that contains orange chews, cherry chews, and peach chews. He performs an experiment. Caleb randomly removes a chew from the bag, records the result, and returns the chew to the bag. Caleb performs the experiment 20 times. The results are shown below: An orange chew was selected 15 times. A cherry chew was selected 3 times. A peach chew was selected 2 times. Based on these results, express the probability that the next chew Caleb removes from the bag will be cherry chew as a decimal to the nearest hundredth.

Answers

Answer:

0.15

Step-by-step explanation:

3/20= 0.15

15/100= 0.15

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