answer the following question:

Sandhill Ltd. purchased a new machine on April 4,2017, at a cost of $156,000. The company estimated that the machine would have a residual value of $18,000. The machine is expected to be used for 10,000 working hours during its four-year life. Actual machine usage was 1,500 hours in 2017;2,100 hours in 2018; 2,300 hours in 2019;2,200 hours in 2020: and 1,900 hours in 2021. Sandhill 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-8. 2.75 and final answers to 0 decimal places, e.g. 5,275.) (1) Straight-line for 2017 through to 2021. (2) Diminishing-balance using double the straight-line rate for 2017 through to 2021. 2017 expense \$ 2018 expense \$ 2019 expense $ 2020 expense $ 2021 expense $ (3) Units-of-production for 2017 through to 2021