Question

A restaurant sells a refillable coffee mug for $7.75. Each refill costs $3.25. Last month Keith spent $82.75 on a mug and refills. Enter an equation you can use to find the number of refills that Keith bought. Let r represent the number of refills.

Answer 1

82.75 = 3.25r + 7.75

Explanation:

$82.75 is the total money spent last month

$7.75 is the cost of a refillable mug

$3.25 is the cost for every refill