1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jeka57 [31]
2 years ago
9

A store sells packages of comic books with a poster. A poster and 5 comics cost ​$15.75 A poster and 11 comics cost ​$27.75 Writ

e a linear function rule that models the cost y of a package containing any number x of comic books.
Mathematics
1 answer:
Vanyuwa [196]2 years ago
8 0

Answer:

y=x+5.99

Step-by-step explanation:

A poster and 2 comics cost ​$7.99

(2,7.99)

A poster and 11 comics cost ​$16.99.

(11,16.99)

Let y be the cost of package and x be the no. of comics

We will use two point slope form :

(x1,y1) = (2,7.99)

(x2,y2) = (11,16.99)

Formula :

y-y1 = y2-y1/x2-x1(x-x1)

Substitute the values:

Hence a linear function rule that models the cost y of a package containing any number x of comic books is y=x+5.99

You might be interested in
Use the following table for questions 11-13.A baseball manager believes a linear relationship exists between the number of Home
slamgirl [31]

The regression equation of Y on X is given by the following formula:

Y-\bar{Y}=b_{yx}(X-\bar{X})

Where byx is given by the formula:

b_{yx}=\frac{N\sum^{}_{}XY-\sum^{}_{}X\sum^{}_{}Y}{N\sum^{}_{}X^2-(\sum^{}_{}X)^2}

Where N is the number of values (N=8). We need to find the sum of X values, the sum of Y values, the average of X, the average of Y, the sum of X*Y and the sum of X^2.

The table of values is:

The values we need to know are on the following table:

By replacing the known values in the formula we obtain:

\begin{gathered} b_{yx}=\frac{8\cdot26125-167\cdot995}{8\cdot4649-(167)^2} \\ b_{yx}=\frac{209000-166165}{37192-27889} \\ b_{yx}=\frac{42835}{9303} \\ b_{yx}=4.6 \end{gathered}

Now, the average of X and Y is the sum divided by N, then:

\begin{gathered} \bar{X}=\frac{167}{8}=20.87 \\ \bar{Y}=\frac{995}{8}=124.37 \end{gathered}

Replace these values in the formula and find the regression equation as follows:

\begin{gathered} Y-124.37=4.6(X-20.87) \\ Y-124.37=4.6X-4.6\cdot20.87 \\ Y=4.6X-96.11+124.37 \\ Y=4.6X+28.26 \end{gathered}

The answer is a) y=4.6x+28.26

7 0
1 year ago
Rufus earned $230 delivering newspapers during the summer. He bought 5 movie passes worth $15 each from his newspaper money. How
wel

Answer:

155

Step-by-step explanation:

15 x 5 = 75

230 - 75 = 155

Hope this helps!

4 0
3 years ago
Read 2 more answers
HELP meeee plllzzzz !!!!!!!!!!!!!!!
aivan3 [116]

Answer:

-3

the blue dot on the no line represent -3

4 0
3 years ago
Read 2 more answers
HELP PLEASE I WILL MARK YOU AS A BRAINLIEST!!!
AnnyKZ [126]

Answer:

I believe it is 6

Step-by-step explanation:

If you think about it the opposite of 6 is -6

and the only one that is -6 is c

because it is in absolute value {6}

will be 6 but there is a negative sign which then you just bring that down and you would get -6

6 0
3 years ago
In the figure, angle K measures 45 degrees. What is the measurement of angle C?
Delvig [45]

It is 45 because the triangle should be 180 degree and if K is 45 then J should be 45, too. We all know that the right triangle is 90 degree, so we add angle J and G, it is 135. Lastly, you subtract 180- 135=45.

5 0
2 years ago
Other questions:
  • ANSWER CORRECTLY FOR BRAINLEAST
    14·2 answers
  • What’s the answer???
    12·1 answer
  • A speed boat is traveling at 100km/hr. how many hours will it take for the boat to cover a distance of 115?
    5·1 answer
  • I have 45 cents in nickels.
    5·1 answer
  • Identify the exponential function graphed in the picture.
    10·1 answer
  • Which exponential function has an initial value of 2?<br><br> f(x) = 2(3x)<br><br> f(x) = 3(2x)
    5·2 answers
  • What is the volume of a sphere with a radius of 2 feet
    15·1 answer
  • Craig likes to collect video records last year he had 10 records his collection now has 12 records what is the percent increase
    6·2 answers
  • PLEASE HELP IF THE ANSWER DOES NOT APPLY TO THIS I WILL REPORT
    14·1 answer
  • Write the equation of the line that passes through the points (-1,-4) and (9,-5).
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!