Nicole's Getaway Spa (NGS) purchased a hydrotherapy tub system to add to the wellness programs at NGS. The machine was purchased at the beginning of the year at a cost of $15,500. The estimated useful life was five years and the residual value was $1,500. Assume that the estimated productive life of the machine is 10,000 hours. Expected annual production was year 1, 2,350 hours; year 2, 2,500 hours; year 3, 2,050 hours; year 4, 2,100 hours; and year 5, 1,000 hours. Required: 1. Complete a depreciation schedule for each of the alternative methods. a. Straight-line. b. Units-of-production. c. Double-declining-balance.