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?

A.
7.50 + $0.24m = 13.02; m = 101 minutes
B.
7.50 - $0.12m = 13.02; m = 66 minutes
C.
7.50 + $0.12m = 13.02; m = 46 minutes
D.
7.50 - $0.24m = 13.02; m = 171 minutes

Answer 1

C. 7.50+$0.12m=13.02; m=46 minutes

Explanation:

7.50+.12m=13.02

-7.50 -7.50

.12m=5.52

.12 .12

m=46 minutes

Answer 2

Charlene used 46 minutes