Depreciation by three methods; partial years Perdue Company purchased equipment on April 1 for $37,530. The equipment was expected to have a useful life of 3 years, or 4,860 operating hours, and a residial value of $1,080. The equlpment was used for 900 hours during Year 1, 1,700 hours in Year 2,1,500 hours in Yesr 3 , and 760 hours in Year 4. Requlred: Determine the amount of depreciation expense for the years ended December 31, Year 1, Year 2, Year 3, and Year 4, by (a) the straight-ine method, (b) the units-ofactivity method, and (c) the double-decining-balance method. Note: FOR DECLINING BALANCE ONLY, round the final multipller to four decimal places. Then, round the answer for each year to the nearest whole dollar. a. Straight-line method b. Units-of-activity method c. Double-dectining-balance method b. Units-of-activity method c. Double-declining-balance method