Chapter 4.1, Problem 78CCR

To determine

Find the cost of 15 lessons.

Answer to Problem 78CCR

The $15$ lessons will cost is $\$170$ .

Explanation of Solution

Given information: Given the dance instructor charges $\$8$ per lesson.

Calculation:

If the dance instructor charges $\$8$ per lesson, then for $x$ lessons,

They charge $8x$ dollars. Add that to the initial cost of $\$50$ and

A total cost of $8x+50$ Dollars of $x$ lessons.

To find the cost for $15$ lessons, set $x=15$ and replace it in the expression above.

  $\begin{array}{l}8\left(15\right)+50\\ =120+50\\ =170\end{array}$

Thus, the $15$ lessons will cost is $\$170$ .