Solar Innovations Corporation bought a machine at the beginning of the year at a cost of $22,000. The estimated useful life was five years and the residual value was $2,000. Assume that the estimated productive life of the machine is 10,000 units. Expected annual production for year 1, 2,000 units; year 2, 3,000 units; year 3, 2,000 units; year 4, 2,000 units; and year 5, 1,000 units.