On April 1, Merle Peper established the Wayne State Travel Agency. The following transactions were completed during the month: 1. Invested $15,000 cash to start the agency. 2. Paid $400 cash for April office rent. 3. Purchased office equipment for $2,500 cash. 4. Incurred $300 of advertising costs in the Chicago Tribune, on account. 5. Paid $600 cash for office supplies. 6. Earned $9,000 for services rendered: Cash of $1,000 is received from customers, and the balance of $8,000 is billed to customers on account. 7. Withdrew $200 cash for personal use. 8. Paid Chicago Tribune amount due in transaction (4). 9. Paid employees salaries, $2,200. 10. Received $8,000 in cash from customers who have previously been billed in transaction