Duluth Ranch, Incorporated purchased a machine on January 1, 2021. The cost of the machine was $20,000. Its estimated residual value was $6,000 at the end of an estimated 5 year life. The company expects to produce a total of 20,000 units. The company produced 800 units in 2021 and 1,250 units in 2022 a. Calculate depreciation expense for 2021 and 2022 using the straight-line method. b. Calculate the depreciation expense for 2021 and 2022 using the units-of-production method. c. Calculate depreciation expense for 2021 through 2025 using the double-declining balance method. Calculate depreciation expense for 2021 and 2022 using the straight-line method. 2021 2022 1 Depreciation Expense Per Year Calculate the depreciation expense for 2021 and 2022 using the units-of-production method. (Do not round your intermediate calculations. Round your final answers to the nearest whole dollar.) 2021 2022 Depreciation Expense Calculate depreciation expense for 2021 through 2025 using the double-declining balance method. (Round your final answer to nearest whole dollar.) 2021 2022 2023 2024 2025 Depreciation Expense