On January 1, Marble Trucking purchased a used Kenworth truck at a cost of $40,000. Marble Trucking expects the truck to remain useful for four years (487,500 miles) and to have a residual valu K of $1,000. Marble Trucking expects the truck to be driven 97.500 miles the first year and 170.625 miles the second year Read the requirements Requirement 1. Compute Marble Trucking's first-year depreciation expense on the truck using (a) Straight-line. (b) Units of production, and (c) Double-declining balance Start by selecting the formulas needed to compute annual depreciation under each of the three methods (Cost-Residual value) Useful life in years Cost-Residual value)/Useful ten miles) x Miles driven Book value x1/Useful Me in years) x 21 Straight line depreciation Units of production depreciation Double-declining balance depreciation a.Compute Marble Trucking's first-year depreciation expense on the truck using the straight-line method First-year depreciation on the truck using the straight-line method is b Compute Marble Trucking's first-year depreciation expense on the truck using the units of production method. (Round the depreciation per unit to the nearest cent, and round your final answer to the nearest whole dollar) First-year depreciation on the truck using the units of production method is c. Compute Marble Trucking's first-year depreciation expense on the truck using the double-declining balance method. (Round the double-declining depreciation rate to two decimal places. Round your final answer to the nearest whole dollar) First-year depreciation on the truck using the double-declining balance method Requirement 2. Show the truck's book value at the end of the first year under the straight-line method Select the formula and then enter the amounts to calculate the book value at the end of the first year using the straight-line method Book value