please help

1. Borges Distributors purchased waterproofing equipment on January 2nd, 2011, for $450,000. The equipment was expected to have a useful life of four years, or 10,000 operating hours, and a residual value of $50,000. The equipment was used for 3,000 operating hours during 2011, 4,000 hours in 2012, 2,500 hours in 2013, and 500 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-production method, and (c) the double-declining-balance method. Also, determine the total depreciation expense for the four years by each method. (12 points) Year S-L Method U of P Method D-D Bal Method 1 1 Totals