I am not sure why it keeps saying "Answer is not compltete"

Terrapin Company engages in the following external transactions for November. 1. Purchase equipment in exchange for cash of $22,200. 2. Provide services to customers and receive cash of $5,100. 3. Pay the current month's rent of $1,500. 4. Purchase office supplies on account for $1,700. 5 . Pay employee salaries of $2,000 for the current month. Required: Record the transactions. Terrapin uses the following accounts: Cash, Supplies, Equipment, Accounts Payable, Service Revenue, Rent Expense, and Salaries Expense. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.)