Solar Innovations Corporation bought a machine at the beginning of the year at a cost of $34,000. The estimated useful life was five years and the residual value was $4,000. Assume that the estimated productive life of the machine is 15,000 units. Expected annual production for year 1, 3,100 units; year 2, 4,100 units; year 3, 3,100 units; year 4, 3,100 units; and year 5, 1,600 units. Required .Complete a depreciation schedule for each of the alternative methods. (Do not round intermediate calculations.) a Straight-line b. Units-of-production