Chapter SH, Problem 3.7MPS

a.

To determine

To graph the data.

Explanation of Solution

Given:

The given data is

  

Calculation:

The graph of the data is shown below-

  

b.

To determine

To write an equation to describe the relationship.

Answer to Problem 3.7MPS

  $y=65x$

Explanation of Solution

Given:

The given data is

  

Calculation:

It is seen that for every increase in number of phones by $1$ , there is an increase of $\$65$ .

So the equation is ,

  $y=65x$

Where $x$ is the number of phones and $y$ is the amount.

Therefore, the equation is $y=65x$

c.

To determine

To find the amount of bonus if Percy sells $10$ phones.

Answer to Problem 3.7MPS

  $\$650$

Explanation of Solution

Substituting the value of $x=10$ in the equation-

  $\begin{array}{l}y=65x\\ y=65\times 10\\ y=650\end{array}$

Therefore, amount earned will be $\$650$ .