Norman Delivery Company purchased a new delivery truck for $41,400 on April 1 , 2016. The truck is expected to have a service life of 10 years or 112,800 miles and a residual value of $3,480. The truck was driven 11,600 miles in 2016 and 14,000 miles in 2017. Norman computes depreciation to the nearest whole month. Required: Compute depreciation expense for 2016 and 2017 using the following methods: (Round your final answers to the nearest dollar.) a. Straight-line method \begin{tabular}{ccc} 2016 & $ & x \\ 2017 & $ & \end{tabular} b. Sum-of-the-years'-digits method \begin{tabular}{ccc} 2016 & 5 & x \\ 2017 & $ & x \end{tabular} c. Double-declining-balance method \begin{tabular}{lll} 2016 & 5 & x \\ 2017 & 5 & x \end{tabular} d. Activity method \begin{tabular}{ccc} 2016 & $ & \\ 2017 & $ & \end{tabular} 2. For each method, what is the book value of the machine at the end of 2016 ? At the end of 2017 ? (Round your answers to the nearest dollar.) a. Straight-line method \begin{tabular}{ccc} 2016 s & x \\ 2017 & x & x \end{tabular} b. Sum-of-the-years'-digits method \begin{tabular}{lll} 2016 & $ & x \\ 2017 & $ & x \end{tabular} c. Double-declining-balance method \begin{tabular}{rrr} 2016 & 5 & X \\ 2017 & 5 & X \end{tabular} d. Activity method \begin{tabular}{ccc} 2016 & $ & \\ 2017 & $ & \end{tabular}