Depreciation by three methods; partial years Perdue Company purchased equipment on April 1 for $69,660. The equipment was expected to have a useful life of 3 years, or 5,400 operating hours, and a residual value of $2,160. The equipment was used for 1,000 hours during Year 1,1,900 hours in Year 2,1,600 hours in Year 3 , and 900 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-ofactivity method, and (c) the double-decining-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-life method b. Units-of-activity method c. Double dedining-balance method 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-9factivity method, ard (c) the double-decining-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-ine method b. Units-of-activity method c. Double-dedining-balance method