Rottino Company purchased a new machine on October 1, 2017, at a cost of $130,000. The company estimated that the machine will have a salvage value of $18,000. The machine is expected to be used for 10,000 working hours during its 5-year life. Compute the depreciation expense under straight-line meth for 2017. (Round answer to 0 decimal places, e.g. 2, 125.) Depreciation expense Compute the depreciation expense under units-of-activity for 2017, assuming machine usage was 1, 620 hours. (Round depreciation cost per unit to 2 decimal places, e.g. 0.50 and depreciation rate to 0 decimal places, e.g. 15%. Round final answer to 2 decimal places, e.g. 2, 215.25.) Depreciation expense Compute the depreciation expense under declining-balance using double the straight rate for 2017 and 2018. (Round answers to 0 decimal places, e.g. 2, 125.) Depreciation expense