Analyze transactions and compute net income. 1. Invested $15,000 cash to start the agency. 2. Paid $600 cash for April office rent. 3. Purchased equipment for $3,000 cash. 4. Incurred $700 of advertising costs in the Chicago Tribune, on account. 5. Paid $900 cash for office supplies. 6. Performed services worth $10,000: $3,000 cash is received from customers, and the balance of $7,000 is billed to customers on account. 7. Withdrew $600 cash for personal use. 8. Paid Chicago Tribune $500 of the amount due in transaction (4). 9. Paid employees' salaries $2,500. 10. Received $4,000 in cash from customers who have previously been billed in transaction (6).