A self-serve car wash charges $5.37 to use its facilities, plus an additional $0.78 for each minute the customer is at the self-serve car wash. If Tiffany was at the car wash for 8 minutes, how much was she charged?

Answer 1

First, let's calculate the additional charge for the time Tiffany spent at the self-serve car wash:

$0.78 * 8 minutes = $6.24

Now let's add the initial charge to the additional charge to find out how much Tiffany was charged:

$5.37 + $6.24 = $11.61

Therefore, Tiffany was charged $11.61 for using the self-serve car wash for 8 minutes.