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Deprecation by three methods, partial years Perdue Company purchased equipment on April 1 for $75,870. The equipment was expected to have a usefol life of 3 years, or 7,020 operabing hours, and a retifual Walue of $2,160. The equlpinen was used for 1,300 hours during Year 1,2,500 hours in Year 2,2,100 hours in Year 3 , and 1,120 hours in Year 4. Required: Determine the amount of depreciaton expense for the years ended December 31, Year 1, Year 2, Year 3, and Year 4, by (o) the straight-line meshod, (b) the unies-ofactivity 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. 5 traight.ine methed b. Uives-of-actenty method b. Units-of-activity method c. Double-declining-balance method