Question

For his long distance phone service, Rafael pays a $6 monthly fee plus 8 cents per minute. Last month, Rafael’s long distance bill was $20.16. For how many minutes was Rafael billed?

Answer 1

8.52 or 8 minutes and 52 seconds (i hope this is right)

Explanation:

8(20.16) + 6 = m

2.52 + 6 = m

8.52 = m

(m is the amount of minutes)

Answer 2

20.16 = 6 + 8s
20.16 = 14s
20.16 - 14 = s
6.16 = s