Depreciation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $270,000. The equipment was expected to have a useful life of three years or 18,000 operating hours, and a residual value of $9,000. The equipment was used for 7,500 hours during Year 1, 5,500 hours in Year 2, 4,000 hours in Year 3, and 1.000 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 stralght-line method, (b) the units-of- activity method, and (c) the double declining balance method. FOR DECLINING BALANCE ONLY, do not round the multipler. 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 X Year 3 x Year 4 c. Double-declining-balance Method Year Amount Year 1 $ X Year 2 TA X Year 3 $ X A Year 4 X c. Double-declining-balance Method Year Amount Year 1 $ Year 2 III x xxx Year 3 Year 4 $