(Solution) - The company acquired a machine on January 1 at an -(2025 Original AI-Free Solution)

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The company acquired a machine on January 1 at an original cost of $81,000. The machine's estimated residual value is $15,000, and its estimated life is 20,000 service hours. The actual usage of the machine was as follows: Year 1, 9,000 hours; Year 2, 5,000 hours; Year 3, 4,000 hours; Year 4, 2,000 hours. Compute
(1) Depreciation expense for each year of the machine's life and
(2) Book value at the end of each year of the machine's life.