Find the values of the missing items (a) through ( x ). Assume the actual sales volume equals \begin{tabular}{|c|c|c|c|c|c|c|c|} \hline Sales Revenue ( & (g) & & & $3,600F & (h) & (i) & $30,000 \\ \hline \multicolumn{8}{|l|}{ Less: } \\ \hline VariableManufacturingCosts & (n) & (o) & & & $19,200 & (j) & $16,000 \\ \hline \begin{tabular}{|l|} Variable \\ marketing \\ and \\ administrative \\ costs \end{tabular} & $4,320 & & (p) & & $4800 & $800U & (c) \\ \hline Contributionmargin & (q) & $1,800U & (s) & (x) & $12,000 & (k) & $10,000 \\ \hline Fixedmanufacturingcosts & (r) & $400F & & & (m) & & (d) \\ \hline Fixedmarketingandadministrativecosts & $3,600 & * & (v) & & $3,000 & & (e) \\ \hline OperatingProfit & (t) & (u) & (w) & $3,600F & $4,000 & (I) & (f) \\ \hline \end{tabular}