E9-6 Computing Depreciation under Alter PlasticWorks Corporation bought a machine at the beginning of the year at a cost of $17,600. The estimated useful life was five years, and the residual value was $2,800. Assume that the estimated productive life of the machine is 14,800 units. Expected annual production was: year 1, 4.600 units; year 2,4,600 units; year 3, 2,800 units; year 4,1,480 units; and year 5, 1,320 units. es Required: 1. Complete a depreciation schedule for each of the alternative methods. (Enter all values as positive amount.) a. Straight-line E9-6 Computing Depreciation under Alter PlasticWorks Corporation bought a machine at the beginning of the year at a cost of $17,600. The estimated useful life was five years, and the residual value was $2,800. Assume that the estimated productive life of the machine is 14,800 units. Expected annual production was: year 1, 4.600 units; year 2,4,600 units; year 3, 2,800 units; year 4,1,480 units; and year 5, 1,320 units. es Required: 1. Complete a depreciation schedule for each of the alternative methods. (Enter all values as positive amount.) a. Straight-line