Answer:
a. Journalize the entry to record the issuance of the note.
Dr Cash 52,380
Dr Interest expense 1,620
Cr Notes payable 54,000
interest expense = $54,000 x 9% x 120/360 = $1,620
b. Journalize the entry to record the payment of the note at maturity.
Dr Notes payable 54,000
Cr Cash 54,000
When the notes is paid, you have to credit cash for the full amount.