a$.$ From the information provided in the schedule below, calculate the annual and monthly depreciation expense for all of the equipment, assuming an expected useful life of $5$ years, using the: straight$-$line, sum$-$of$-$the$-$years' digits, double$-$declining balance, and MACRS $(3$ and $5$ year$)$ methods of depreciation. You do not need to calculate monthly expense for the MACRS methods.

$\backslash$table$[[\backslash$table$[[$Unit$],[$Truck$]],$Cost,$\backslash$table$[[$Salvage$],[$Value$]],($as$,\frac{6}{30}\frac{?}{x1}$