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)