The adjusted trial balance of Warbocks Corporation at December 31, 2014 includes the following accounts: Retained Earnings $12,600; Dividends $5,000; Service Revenue $30,000; Salaries and Wages Expense $15,000; Insurance Expense $2,000; Rent Expense $4,500; Supplies Expense $500; and Depreciation Expense $1,000. Prepare a retained earnings statement for the year.