Instructions: Using the sum-of-the-years-digit and double-declining balance depreciation methods, wompute the depreciation expense for 2019 and 2020 and the book value of the machine at the end of 2020 for each of the following two independent cases. Please show your work briefly and have your final answers summarized in the tables, Round the final answers in the tables to the nearest dollar when needed. a. Gold Co, acquired a machine on Jan. 1, 2019, at a cost of $58,000. The machine has an estimated salvage value of $9,000 at the end of its 7-year useful life. The depreciation adjustment is done at the end of every calendar year. Depreciation expense Depreciation expense Book value as of Depreciation method for 2019 for 2020 Dec. 31, 2020 Sum-of-the-years-digits Double declining balance b. Silver Co. acquired a equipment on April 1, 2019, at a cost of $58,000. The machine has an estimated salvage value of $9,000 at the end of its 7-year useful life. The depreciation adjustment is done at the end of every calendar year. Depreciation expense Depreciation expense Book value as of Depreciation method for 2019 for 2020 Dec. 31, 2020 Sum-of-the-years-digits Double declining balance