9.5 Detirmine Straight line depreciation for partial period Gotham Company purchased a new machine on October 1, 2017, at a cost of $90,000. The company estimated that the machine has a salvage value of $8,000. The machine is expected to be used for 70,000 working hours during its 8-year life. Instructions Compute the depreciation expense under the straight-line method for 2017 and 2018, assuming a December 31 year-end. NOTE: Enter a number in cells requesting a value; enter either a number or a formula in cells with a "?" Value Value Cost Salvage value Depreciable cost Useful life Annual depreciation 2017 Depreciation 2018 Depreciation Value Value X 3/12- Value After you have completed E9-5, consider the additional question. Assume that the cost of the new machine changed to $85,000. Determine the impact of this change on 2017 and 2018 depreciation