Pharoah Ltd. purchased a delivery truck on May 1,2021 , at a cost of $78,120. The truck is expected to have a residual value of $7,400 at the end of its 4-year useful life. Pharoah has a December 31 year end. Calculate the depreciation expense using the diminishingbalance method for 2021 and 2022. Assume the depreciation rate is equal to one time the straight-line rate. (Round answers to 0 decimal places, e.g. 5,275.) 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. (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. 2017 expense $ 2018 expense $ 2019 expense $ 2020 expense $ 2021 expense $