9. Calculate the open-to-buy for March given the following data: \begin{tabular}{|l|r|r|} \hline March sales & $30,000 & \\ \hline markdowns & $5,000 & \\ \hline March BOM stock & $90,000 & \\ \hline March EOM stock & $100,000 & \\ \hline March on order & $10,000 & \\ \hline \end{tabular}