A self-serve car wash charges $5.05 to use its facilities, plus an additional $0.97 for each minute the customer is at the self-serve car wash. If Tiffany was at the car wash for 9 minutes, how much was she charged?
A.$13.78
B.$8.73
C.$6.02
D.$14.05

Question

danjs · Answer

total cost = 5.05 + 97 cents per minute

danjs · Answer

initial cost of 5.05 plus 97 cents each minute for 9 minutes

danjs · Answer

Let C = Cost
     t = time in minutes

C(t) = 0.97t + 5.05

danjs · Answer

so for t= 9 minutes
C(9) = ???

anonymous · Answer

is it a

danjs · Answer

oh, not sure didnt calculate it... um

danjs · Answer

0.97*9 + 5.05 =

danjs · Answer

yeah i got the same ...C(9) = 13.78

anonymous · Answer

thxs