$[$The following information applies to the questions displayed below.$]$

A company began January with $9,000$ units of its principal product. The cost of each unit is $$5.$ Inventory transactions for the month of January are as follows:

$\backslash$table$[[,$Purchases$],[$Date of Purchase,Units,Unit Cost$*,$Total Cost$],[$January $10,6,000,$$$6,$$$36,000$