Exercise 6-13 Depreciation calculation methods LO 3 Millco, Inc., acquired a machine that cost $410,000 early in 2016. The machine is expected to last for tenth years, and its estimated salvage value at the end of its life is $61,000. Required a. Using straight-line depreciation, calculate the depreciation expense to be recognized in the first year of the machine's life and calculate the accumulated depreciation after the sixth year of the machine's life. Depreciation expense Accumulated depreciation b. Using declining-balance depreciation at twice the straight-ine rate, calculate the depreciation expense for the third year of the machine's life Depreciation expense c. What will be the net book value of the machine at the end of its tenth year of use before it is disposed of, under each depreciation method? Net book value Straight-ine depreciation Declining-balance depreciation