Exercise 9-6 Rottino Company purchased a new machine on October 1, 2017, at a cost of $116,000. The company estimated that the machine will have a salvage value of $11,000. The machine is expected to be used for 10,000 working hours during its 4-year life. Compute the depreciation expense under straight-line method for 2017. (Round answer to o decimal places, e.g. 2,125.) 2017 Depreciation expenses Compute the depreciation expense under units-of-activity for 2017, assuming machine usage was 1,670 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, eg. 2,125.25.) 2017 Depreciation expense Compute the depreciation expense under declining-balance using double the straight-line rate for 2017 and 2018. (Round answers to O decimal places, e.g. 2,125.) 2017 2018 Depreciation expense