On April 1, Helen Martin established Martin's Travel Agency. The following transactions were completed during the month. Invested $13,000 cash to start the agency. Paid $600 cash for April office rent. Purchased equipment for $2,200 cash. Incurred $600 of advertising costs in the Chicago Tribune, on account. Paid $900 cash for office supplies. Performed services worth $11,000 : $2,800 cash is received from customers, and the balance of $8,200 is billed to customers on account. Withdrew $400 cash for personal use. Paid Chicago Tribune $400 of the amount due in transaction (4). Paid employees' salaries $2,200. Received $5,200 in cash from customers who have previously been billed in transaction (6). (a) Your answer is partially correct. Complete the the income statement