Question

For his long distance phone service, Brian pays a $5 monthly fee plus 9 cents per minute. Last month, Brian's long distance bill was $11.93. For how many minutes was Brian billed?

Answer 1

5+.09m=11.93  subtract 5 from both sides

.09m=6.93  divide both sides by .09

m=77

So he was billed for 77 minutes.

Answer 2

5 + 0.09m = 11.93
0.09m = 11.93 - 5
0.09m = 6.93
m = 6.93 / 0.09
m = 77....Brian was billed for 77 minutes