D. $12.90
Calculation:
$5.90 (base fee) + ($0.56 x 7 minutes) = $5.90 + $3.92 = $12.90
A self-serve car wash charges $5.90 to use its facilities, plus an additional $0.56 for each minute the customer is at the self-serve car wash. If Tiffany was at the car wash for 7 minutes, how much was she charged?
A.
$6.46
B.
$3.92
C.
$9.82
D.
$12.90
1 answer