Culver Company purchased a new machine on October 1,2022 , at a cost of $113,600. The company estimated that the machine will have a salvage value of $13,600. The machine is expected to be used for 10,000 working hours during its 4 year life. (a) (b). Compute the depreciation expense under units-of-activity for 2022, assuming machine usage was 1,790 hours. (Round intermediote calculotions to 2 decimal ploces, eg 10.12 and final answer to 0 decimal places, es. 2, 125.) Compute the depreciation expense under declining-balance using double the straight-line rate for 2022 and 2023 . (Round final answers to O declmal places, eg 2,125.)