Please solve each problem and explain step by step as to how you got the answers.

Instructions: Using the sum-of-the-years-digit and double-declining balance depreciation methods, compute the depreciation expense for 2021 and 2022 and the book value of the machine at the end of 2022 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. Stone Co, acquired a machine on Jan. 1, 2021, at a cost of $29,000. The machine has an estimated salvage value of $ 4,500 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 2021 for 2022 Dec. 31, 2022 Sum-of-the-years-digits Double declining balance b. Rock Co, acquired a equipment on March 1, 2021, at a cost of $29,000. The machine has an estimated salvage value of $ 4,500 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 2021 for 2022 Dec 31, 2022 Sum-of-the-years-digits Double declining balance