An average-sized home refrigeration unit has a 1/17-hp fan motor for blowing air over the inside cooling coils, a 1/22-hp fan motor for blowing air over the outside condenser colls, and a 0.18-hp compressor motor.

(a) Working together, the three motors use electric energy at what rate? Energy = 

(b) If electricity costs $0.16/kWh, what is the cost of running the unit per hour? Cost = 

(c) What is the cost for running the unit 17 hours a day for a 30-day month? (Round the final answer to the nearest cent) cost =