- Depreciation Methods (show each method in a separate excel tab) Appliance Steel purchases a machine on January 1 for $25,000. The machine has an estimated useful life of seven years, during which time it is expected to produce 114,800 units. Salvage value is estimated at $1,500. The machine produces 16,500 and 15,200 units in its first and second years of operation, respectively. Required: Calculate depreciation expense for the machine using the straight-line method of depreciation. $/yr. Calculate depreciation expense for the machine's first two years using the double-declining-balance method of depreciation. Do not round any intermediate amounts used for calculations. Round final answers to the nearest dollar. Depreciation Expense Year 1$ $ Year 2 Calculate depreciation expense for the machine's first two years using the units-of-activity method of depreciation. Depreciation Expense Year 1$ Year 2$