On January 2, 2018 Archer Company, a skateboard manufacturer, installed a computerized machine in its factory at a cost of $150,200 The machine's useful life was estimated at four years or a total of 186,000 units with a $20,000 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 38,400 2019 41.300 2020 52,7ee 2021 57.000 Straight-Line Double-Declining-Balance Units-of-Production Year 2018 2019 2020 2021 Total