1. Depreciation on the company's equipment for the year is computed to be $17,000.
2. The Prepaid Insurance account had a $6,000 debit balance at December 31 before adjusting for the costs of any expired coverage. An analysis of the companys insurance policies showed that $1,680 of unexpired insurance coverage remains.
3. The Office Supplies account had a $250 debit balance at the beginning of the year; and $2,680 of office supplies were purchased during the year. The December 31 physical count showed $295 of supplies available.
4. Two-thirds of the work related to $12,000 of cash received in advance was performed this period.
5. The Prepaid Rent account had a $5,000 debit balance at December 31 before adjusting for the costs of expired prepaid rent. An analysis of the rental agreement showed that $3,320 of prepaid rent had expired.
6. Wage expenses of $7,000 have been incurred but are not paid as of December 31.

Prepare adjusting journal entries for the year ended (date of) December 31 for each of these separate situations.