The following transactions have been journalized and posted to the proper accounts. March is the first month of business operations.

Mar. 1 The business received

$8,000

cash and issued common stock to stockholders.

Mar. 2 Paid the first month's rent of

$500.

Mar. 3 Purchased equipment by paying

$2,000

cash and executing a note payable for

$3,000.

Mar. 4 Purchased office supplies for

$600

cash.

Mar. 5 Billed a client for

$10,000

of design services completed.

Mar. 6 Received

$7,000

on account for the services previously recorded.

What is the ending balance in the Service Revenue account?