The Interstate Carpet Discount Store has annual demand of

$10,000$ yards of Super Shag carpet. The annual carrying cost

for a yard of this carpet is $$1\mathrm{.}25,$ and the ordering cost is

$$300.$ The carpet manufacturer normally charges the store $$8$

per yard for the carpet. However, the manufacturer has offered

a discount price of $$6\mathrm{.}50$ per yard if the store will order

$5000$ yards. How much should the store order, and what will

be the total annual inventory cost for that order quantity?