Dexter Industries purchased packaging equipment on January 8 for $480,400. The equipment was expected to have a useful life of four years, or 7,600 operating hours, and a residual value of $39,600. The equipment was used for 2,660 hours during Year 1, 1,596 hours in Year 2, 2,128 hours in Year 3, and 1,216 hours in Year 4. 4 Required: 1. Determine the amount of depreciation expense for the four years ending December 31 by (a) the straight-line method, (b) the units of activity method, and (c) the double-declining-balance method. Also determine the total depreciation expense for the four years by each method. Round the answer for each year to the nearest whole dollar. Depreciation Expense Year Straight-Line Method Units-of-Activity Method Double-Declining Balance Method Year 1 Year 21 Year 31 Year 41 Total 2. What method yields the highest depreciation expense for Year 12 3. What method yields the most depreciation over the four-year life of the equipment?