(SHOW YOUR WORK) Computer equipment was acquired at the beginning of the year at a cost of $80,000 that has an estimated residual value of $2,500 and an estimated useful life of 5 years. Part 1. Determine the (a) annual straight-line depreciation and (b) the net book value for year 3. Part 2. Determine (a) the depreciation rate (per unit depreciation) and (b) the depreciation expense for this year under Units of Production if the equipment will last for 10,000 hours and it was used this year for 1,200 hours. Part 3. Determine (a) the depreciation expense for year 2 and the (b) Accumulated depreciation for year 2 using the double declining balance depreciation method