University Car Wash built a deluxe car wash across the street from campus. The new machines cost $225,000 including installation. The company estimates that the equipment will have a residual value of $22,500. University Car Wash also estimates it will use the machine for six years or about 12,500 total hours. Actual use per year was as follows:

YearHours Used13,10021,60031,70042,30052,10061,700