An average-sized home refrigeration unit has a 1/3-hp fan motor for blowing air over the inside cooling coils, a 1/5-hp fan motor for blowing air over the outside condenser coils, and a 5.25-hp compressor motor. (a) All three motors use electric energy at what rate? Energy = 4314.4 W (b) If electricity costs $0.17/kWh, what is the cost of running the unit per hour? cost=$ (c) What is the cost for running the unit 12 hours a day for a 30-day month? (Round final answer to the nearest cent.) cost=S 4