Answer and Explanation:
The Journal entry is shown below:-
1. Sales Revenue Dr, $42,030
    Rent Revenue $300
         To Salaries and Wages Expense $21,600
         To Depreciation Expense $1,300
        To Utilities Expense $4,220
        To Insurance Expense $1,400
         To Rent Expense $6,000
        To Income Tax Expense $2,900
        To Retained Earnings $4,910
(Being closing of revenues and expenses is recorded)
2. Retained Earnings Dr, $300
          To Dividends $300
(Being closing of dividend is recorded)