Aself-serve car wash charges $5.43 to use its facilities, plus an additional $0.57 for each minute the customer is at the self-serve car wash. if tiffany was at the car wash for 6 minutes, how much was she charged?

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?