Depreclation by Three Methods; Partial Years Perdue Company purchased equipment on April 1 for $67,500. The equipment was expected to have a useful life pf three years, or 4,860 operating hours, and a realdual value of $1,890. The equipment was used for 900 hours during Year 1, 1,700 hours in Year 2, 1,500 hours in Year 3, and 760 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-ine method, ( (b) unita-el.3ectivity method, and (c) the double-decining-balance method. Note: FOR DECINING BALANCE ONI, round the multiplier to four decimal places. Then rovind the answer for each year to the nearest whole dollar. a. Straight-line method b. Units-of-activity method c. Double-declining-balance method