A machine which cost $35,700 was acquired on March 1, 2020. Its estimated salvage value is $8,400 and its expected useful life is 6 years. Requirements (two requirements): 1. Assume that the double-declining balance depreciation method is used. Calculate the amounts of depreciation expense for 2020 and 2021, respectively, Round the final answer to the nearest dollar. (6 points total) Answer 2020: AJ 2021: A/ 2. Assume that the the sum-of-year's-digit depreciation method is used. Calculate the amounts of depreciation expense for 2020 and 2021 respectively. Round the final answer to the nearest dollar. (6 points total) Answer 2020: AJ 2021: A/ 2. Assume that the the sum-of-year's-digit depreciation method is used. Calculate the amounts of depreciation expense for 2020 and 2021 respectively. Round the final answer to the nearest dollar. (6 points total) Answer 2020: A/ 2021