. The following trial balance was taken from the books of Fisk Corporation on December 31, 2012. Account Debit Credit Cash $ 9,000 Accounts Receivable 40,000 Notes Receivable 10,000 Allowance for Doubtful Accounts $ 1,800 Inventory 44,000 Prepaid Insurance 4,800 Equipment 110,000 Accumulated Depreciation--Equip. 15,000 Accounts Payable 10,800 Common Stock 44,000 Retained Earnings 75,000 Sales Revenue 260,000 Cost of Goods Sold 126,000 Salaries and wages Expense 50,000 Rent Expense 12,800 Totals $406,600 $406,600 At year end, the following items have not yet been recorded. a. Insurance expired during the year, $2,000. b. Estimated bad debts, 1% of gross sales. c. Depreciation on equipment, 10% per year. d. Interest at 6% is receivable on the note for one full year. e. Rent paid in advance at December 31, $5,400 (originally charged to expense). f. Accrued salaries and wages at December 31, $5,800. Instructions (Prepare entries on a separate sheet of paper) (a) Prepare the necessary adjusting entries. (b) Prepare the necessary closing entries.