On January 2, 2018 Archer Company, a skateboard manufacturer, Installed a computerized machine in its factory at a cost of $150300 The machine's useful life was estimated at four years or a total of 185,000 units with a $28,000 trade-in value Archer Company's year end is December 31 Calculate depreciation for each year of the machine's estimated useful life under each of the following methods (Do not round intermediate calculations.) a. Straight-line b. Double-declining-balance c. Units of production, assuming actual units produced were: Year Units 2018 39,200 2019 42,500 2020 53,500 2021 65,000 Straight-Line Double Declining Balance Units of Production Year 2018 2019 2020 2021 Total