The following accounts are taken from the December 31, 2010, financial statements of A to Z Advertising Company:

The following accounts are taken from the December 31, 2010, financial statements of A to ZAdvertising Company. 46,882 Advertising revenue 1,556 Cash Accounts receivable 7,336 2,319 Interest expense Accounts payable 5,040 37.660 Operating expenses Unearned revenue 1,218 Equipment 18,448 Income tax expense 2,366 The following activities occurred in 2011: 1. Billed customers for advertising services rendered, $55,400 2. Received cash from customers in payment of their accounts, $10,600. 3. Incurred $45,200 of operating expenses of which $39,200 was paid in cash and $6,000 was on account and unpaid as of the end of the year. 4. Paid suppliers $5,400 on the accounts payable. 5. Received deposits from customers of $2,540 for advertising services to be performed in 2012