Question

Charlene's long-distance telephone service charges $7.50 per month plus $0.12 for each minute. Her bill last month was $13.02. What equation represents the amount of her last bill, and how many minutes did Charlene use last month?

Answer 1

7.50 + 0.12x = 13.02

Charlene spent 46 min on the phone last month

Explanation:

First you would do 13.02 - 7.50 = 5.52

Secondly you would do 5.52/0.12 = x

this will give you x= 46