Question

HELP

for his long distance phone service, tony pays a $5 monthly fee plus 9 cents per minute. last month, Tony's long distance bill was $17.96. for how many minutes was Tony billed?

Answer 1

144 min.

Explanation:

y=0.09x+5 ( x is the number of minutes, y is the bill amount)

17.96=0.09x+5

17.96-5=0.09x

x=12.96/0.09=144 minutes