Depreciation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $19,440. The equipment was expected to have a useful life of three years, or 3,780 operating hours, and a residual value of $540. The equipment was used for 700 hours during Year 1, 1,300 hours in Year 2, 1,100 hours in Year 3, and 680 hours in Year 4. Required: Determine the amount of depreciation expense for the years ended December 31, Year 1, Year 2. Year 3, and Years, by the straight-line method, (b) units-of-activit 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 Year Amount Year 1 $ $ Year 2 Year 3 UA Year 4 b. Units-of-activity method Year Amount Year 1 $ Year 2 Year 3 $ s Year 4 C. Double-declining-balance method Year Amount Year 1 Year 2 $ $ Year 3 Year 4