a. Depreciation on the company's equipment for the year is computed to be $17,000. b. The Prepaid Insurance account had a $5,000 debit balance at December 31 before adjusting for the costs of any expired coverage. An analysis of the company's insurance policies showed that $750 of unexpired insurance coverage remains. c. The Supplies account had a $400 debit balance at the beginning of the year, and $2,680 of supplies were purchased during the year. The December 31 physical count showed $472 of supplies available. d. One-fifth of the work related to $10,000 of cash received in advance was performed this period: e. The Prepaid Rent account had a $5,200 debit balance at December 31 before adjusting for the costs