Rottino Company purchased a new machine on October 1, 2015, at a cost of $119,800. The company estimated that the machine will have a salvage value of $14,300. The machine is expected to be used for 11,200 working hours during its 4-year life. Compute the depreciation expense under straight-line method for 2015. (Round answer to O decimal places, e.g. 2,125.) Straight-line method $ Compute the depreciation expense under units-of-activity for 2015, assuming machine usage was 1,900 hours. (Round per hour value to 2 decimal places, e.g. 21.25 and final answer to O decimal places, e.g. 2,125.) Units-of-activity method $ Compute the depreciation expense under declining-balance using double the straight-line rate for 2015 and 2016. (Round answers to O decimal places, e.g. 2,125.) Declining-balance method $ $