Perdue company purchased equipment on April 1st for $79650. the equipment was expected to have a useful life of 3 years, or 7,020 operating hours, and a residual value of $2,430. the equipment 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 depreciation expense for the years ended December 31, Year 1, Year 2, Year 3, and Year 4 by the straight-line method. units of output method, and the double declining balance method.

Note: for declining balance only around the multiplier to four decimal places. Dan round the answer for each year to the nearest whole dollar.