Depreciation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $25,110. The equipment was expected to have a useful life of three years, or 4,860 operating hours, and a residual value of $810. The equipment was used for 900 hours during Year 1,1,700 hours in Year 2,1,500 hours in Year 3 , and 760 hours in Year 4 . Required: Determine the arnount 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) units-of-activity method, and (c) the double-declining-balance method. Note: FOR DECLINING BALANCE ONLY, round the multiplier 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 b. Units-of-activity method c. Double-declining-balance method