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A new excavator 2020 Caterpillar 323 is purchased for $220,000 and has an estimated salvage value of $20,000 at the end of the five-year recovery period. 1. Prepare a depreciation schedule using the straight-line method (7 points) 2. Prepare a depreciation schedule using the sum-of-the-year method (7 points) 3. Prepare a depreciation schedule using the MACRS method and half-year convention (6 points)