D E F G HTME On 10/1/X1 Your Co. purchased a machine for $20000. It has a 8 year life or 40000 machine hours and a salvage value of $800. 7- Use the straight-line method to calculate depreciation expense: 5 20X1 20X2 8 10 11 13 8 - Use the units-of-activity method to calculate depreciation expense: (The machine was used 1200 hours in 20X1 and 5200 hours in 20X2) Deprec. rate 15 16 20X1 20X2 18 22 23 9 - Use the double-declining balance method to calculate: Yr Beg. Book Value Depr. Rate Deprec. Exp. Accum. Depr. End. Book Value X1 24 X2