PlasticWorks Corporation bought a machine at the beginning of the year at a cost of $15,150. The estimated useful life was five years, and the residual value was $2,450. Assume that the estimated productive life of the machine is 12,700 units. Expected annual production was: year 1, 3,900 units; year 2, 3,900 units; year 3, 2,450 units; year 4, 1,270 units; and year 5, 1,180 units. Required: 1. Complete a depreciation schedule for each of the alternative methods. (Enter all values as positive amount.)

a. Straight-line.

depreciation expense l cost l accumulated depreciation l book value