$($a$)$

Prepare an incremental analysis for the special order. $($Round computations for per unit cost to $2$ decimal places, e$.$g$.15\mathrm{.}25$ and all other computations and final answers to the nearest whole dollar, e$.$g$.5,725.$ Enter negative amounts using either a negative sign preceding the number e$.$g$.-45$ or parentheses e$.$g$.(45).)$

Cost of goods sold