Calculator Perdue Company purchased equipment on April 1 for $44,550. The equipment was expected to have a useful life of three years, or 4,320 operating hours, and a residual value of $1,350. The equipment was used for 800 hours during Year 1, 1,500 hours in Year 2, 1,300 hours in Year), and 720 hours in Year 4 Required: 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-line method, (b) the units of activity method, and (c) the double-declining-balance method. Note: FOR DECLINING BALANCE ONLY, round the final multiplier to four decimal places. Then round the answer for each year to the nearest whole dollar. a. Straight-line method Year Amount Year 1 Year 2 Year 3 Year 4 b. Units-of-activity method Year Amount Year 1 Year 2 Year 3 Year 4 c. Double-declining-balance method Year Amount Year 1 Year 2