Perdue company purchased equipment on april 1 for $67,500. the equipment was expected to have a useful life of three years, or 4,860 operating hours, and a residual 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-line method, (b) units-of-output 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 methodyear amountyear 1 $year 2 $year 3 $year 4 $b. units-of-output methodyear amountyear 1 $year 2 $year 3 $year 4 $c. double-declining-balance methodyear amountyear 1 $year 2 $year 3 $year 4 $