Farmer Jason purchased a piece of machinery for $56,000. Assume a 7-year useful life and no salvage value. Calculate the approximate amount of depreciation in the last year of the asset's useful life using the double declining balance depreciation method. a. $8,000 b. $0 c. $7,437 O d. $2,125 Farmer Jason purchased a piece of machinery for $56,000. Assume a 7-year useful life and no salvage value. Calculate the amount of depreciation in the last year of the asset's useful life using the sum-of-the-years-digits depreciation method. a. $0 b. $4,000 c. $2,000 d. $8,000