Compute the depreciation expense under units-of-activity for 2020 , assuming machine usage was 1.500 hours. (Round Intermediate calculations to 1 decimal place, es.10.1 and final answer to 0 decimal ploces, es. 2,125.) Compute the depreciation expense under declining-balance using double the straight-line rate for 2020 and 2021. (Round answers to O decimal places, e.g. 2,125.) Swifty Company purchased a new machine on October 1,2020 , at a cost of $112,400. The company estimated that the machine will have a salvage value of $12,400. The machine is expected to be used for 10,000 working hours during its 5 -year life. (a) Your answer is correct. Compute the depreciation expense under straight-line method for 2020 . (Round answer to 0 decimal places, es. 2,125.)