Dexter Industries purchased packaging equipment on January 8 for $571,600. The equipment was expected to have a useful life of three years, or 6,900 operating hours, and a residual value of $47,200. The equipment was used for 2,760 hours during Year 1, 2,139 hours in Year 2, and 2,001 hours in Year 3.

Required:

1. Determine the amount of depreciation expense for the three years ending December 31, Year 1, Year 2, Year 3, 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 three years by each method.

Note: For all methods, round the answer for each year to the nearest whole dollar.