Question

When Carrie mows a lawn, she charges a flat fee of $5 plus an hourly rate, r. Carrie worked 2 hours at her last job. The equation 2r+5=20 represents, in dollars, what Carrie charged. What is Carrie’s hourly rate?

Answer 1

$7.50

Explanation:

You use inverse operations to evaluate the equation. You subtract 5 from 20, which is 15. Then you divide 15 by 2, which is 7.5.