Question

Ryan charges his neighbors \(17.50 to wash their car. How many cars must he wash next summer if his goal is to earn at least \)1,500?

Short answer

The number of cars Ryan must wash to earn$1500$ are about$86$.

Step-by-step solution

Given information

The cost of per wash is$\$17.50$and Ryan want to earn$\$1500$.

Suppose the total number of cars

Let the total number of cars be $x$.

The total amount $\$17.50$times $x$at lest greater than equal to $1500$:

$$\begin{gathered} 17.50x\ge 1500 \\ x\ge 85.7 \end{gathered}$$

Round of the number to its nearest integer:

$x\ge 86$

Therefore, for Ryan need to wash at least $86$ cars to earn$\$1500$.