1) Record supplies used. Supplies on hand December 31 is $ 500.
2) Record expired advertising. Prepaid advertising of $24,000 was for 3 years. One year's cost has expired.
3) Record bad debts expense. Of $150,000 of Accounts Receivable, $25,000 is not expected to be collected so adjust the balance in the Allowance for bad debts to $25,000.
4) Unearned revenue on December 31 is $4,000. Record earned portion of unearned revenue.

Record adjusting journal entries for the above.