Carla vista Ltd. purchased a new machine on April 4 2017, at a cost of $176000. The company estimated that the machine would have a residual value of $18000. The machine is expected to be used for 10000 working hours during its four-year life. Actual machine usage was 1600 hours in 2017; 2200 hours in 2018; 2300 hours in 2019; 2000 hours in 2020; and 1900 hours in 2021. Carla vista has a December 31 year end. Solve for a straight-line for 2017 through to 2021, dimishing-balance using double the straight-line rate for 2017 through to 2021, and units of production for 2017 through to 2021