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Calculate depreciation for the machine under each of the following methods: (Round expense per unit to 2 decimal places, eg. 2.75 and final answers to 0 decimal places, e.g. 5,275.) (1) Straight-line for 2017 through to 2021. (3) Units-of-production for 2017 through to 2021. 2017expense $ $ $ $ $ (2) Diminishing-balance using double the straight-line rate for 2017 through to 2021. Sheridan Ltd. purchased a new machine on April 4,2017, at a cost of $164,000. The company estimated that the machine would have a residual value of $16,000. The machine is expected to be used for 10,000 working hours during its four-year life. Actual machine usage was 1,400 hours in 2017; 2,100 hours in 2018; 2,400 hours in 2019; 2,300 hours in 2020; and 1,800 hours in 2021. Sheridan has a December 31 year end. (a) Calculate depreciation for the machine under each of the following methods: (Round expense per unit to 2 decimal places, e.g. 2.75 and final answers to 0 decimal places, e.g. 5,275.) (1) Straight-line for 2017 through to 2021. \begin{tabular}{ll} 2017 expense & $ \\ 2018 expense $ & \\ 2019 expense $ \end{tabular}