3 A parking meter charges 2 50 per hour How much would it cost to park for three and a half hours a 71 b 7 50 c 7 80 d 8 75 4 In 4 of an hour Becca completes 1 5 5 complete the project a 4 hours 25 b 1 hour of a project How many hours will it take her to c 4 hours d 4 2 25 hours