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1. Fill in depreciation expense in year 3 under each depreciation method when residual value is $30,000 and useful life is 3 years: Depreciation method 135,000 Straight-line Units-of-Output 94,500 Double-declining 18,237 2. Fill in the book value at the end of year 1 under each depreciation method when residual value is $36,000 and useful life is 4 years: Depreciation method: Straight-line 335,250 262,100 X Units-of-Output Double-declining 217,500 3. Move the Useful Life slider from 3 years to 4 years and complete the sentence. when the cost is spread over a longer useful life. Depreciation expense each year under every method is lower 1. Fill in depreciation expense in year 3 under each depreciation method when residual value is $30,000 and useful life is 3 years: Depreciation method 135,000 Straight-line Units-of-Output 94,500 Double-declining 18,237 2. Fill in the book value at the end of year 1 under each depreciation method when residual value is $36,000 and useful life is 4 years: Depreciation method: Straight-line 335,250 262,100 X Units-of-Output Double-declining 217,500 3. Move the Useful Life slider from 3 years to 4 years and complete the sentence. when the cost is spread over a longer useful life. Depreciation expense each year under every method is lower