Kari Engle, D.D.S., opened a dental practice on January 1, 2014. During the fi rst month of operations, the following transactions occurred.
1. Performed services for patients who had dental plan insurance. At January 31, $875 of such services were performed but not yet recorded.
2. Utility expenses incurred but not paid prior to January 31 totaled $520.
3. Purchased dental equipment on January 1 for $80,000, paying $20,000 in cash and signing a $60,000, 3-year note payable. The equipment depreciates $400 per month.
Interest is $500 per month.
4. Purchased a six-month malpractice insurance policy on January 1 for $18,000.
5. Purchased $1,600 of dental supplies. On January 31, determined that $700 of supplies were on hand.

Instructions
Prepare the adjusting entries on January 31. Account titles are: Accumulated Depreciation- Equipment, Depreciation Expense, Service Revenue, Accounts Receivable, Insurance Expense, Interest Expense, Interest Payable, Prepaid Insurance, Supplies, Supplies Expense, Utilities Expense, and Utilities Payable.