South Airlines purchased a 747 aircraft on January 1, 2019, at a cost of $35,000,000. The estimated useful life of the aircraft is 20 years, with an estimated salvage value of $5,000,000. On January 1, 2022 the airline revises the total estimated useful life to 15 years with a revised salvage value of $3,500,000. * Your answer is incorrect. Compute the depreciation and book value at December 31, 2021 using the straight-line method and the double-declining-balance method. Straight-line Declining-balance Accumulated depreciation $ $3,000,000 $ 4,500,000 Book value $ 32,000,000 $ 30,500,000 e Textbook and Media X Your answer is incorrect. Book value $ 32,000,000 $ 30,500,000 e Textbook and Media X Your answer is incorrect. Assuming the straight-line method is used, compute the depreciation expense for the year ended December 31, 2022. Depreciation Expense $ 1800000 e Textbook and Media