Newbirth Coatings Company purchased waterproofing equipment on January 2, 2011, for $784, 800. The equipment was expected to have a useful life of four years, or 9, 600 operating hours, and a residual value of $64, 800. The equipment was used for 3, 600 hours during 2011, 3,000 hours in 2012, 1, 700 hours in 2013, and 1, 300 hours in 2014. Determine the amount of depreciation expense for the years ended December 31, 2011, 2012, 2013, and 2014, by (a) the straight-line method, (b) the units-of-output method, and (c) the double-declining-balance method. Also determine the total depreciation expense for the four years by each method