$5)$ A Treasury bill is priced at $9\%$ on a bank discount basis. If the Treasury bill has a par value of $$1,000$ and matures in $120$ days, calculate the current dollar price of the bill.

$6)$ What is the dollar price of a treasury security quoted $101-066$ with a par value of $$1,000?$

$7)$ What is the dollar price of a treasury security quoted $91-19+$ with a par value of $$1,000?$