I need help with requirements 4, 7a, and 9 only. Thanks

The general ledger of the Karlin Company, a consulting company, at January 1, 2021, contained the following account balances: Credits Debits 30,000 15,000 20,000 Account Title Cash Accounts receivable Equipment Accumulated depreciation Salaries payable Common stock Retained earnings Total 6,000 9,000 40,500 9,500 65,000 65,000 The following is a summary of the transactions for the year: a. Service revenue, $100,000, of which $30,000 was on account and the balance was received in cash. b. Collected on accounts receivable, $27,300. c. Issued shares of common stock in exchange for $10,000 in cash d. Pald salaries, $50,000 (of which $9,000 was for salaries payable at the end of the prior year) e. Paid miscellaneous expense for various items, $24,000 1. Purchased equipment for $15,000 in cash. g. Paid $2,500 in cash dividends to shareholders. 1. Accrued salaries at year-end amounted to $1.000. 2. Depreciation for the year on the equipment is $2,000. Required: 2., 5, & 8. Prepare the summary, adjusting and closing entries for each of the transactions listed, 3. Post the transactions, adjusting and closing entries into the appropriate t-accounts. 4. Prepare an unadjusted trial balance. 6. Prepare an adjusted trial balance. 7-a. Prepare an income statement for 2021 7-b. Prepare a balance sheet as of December 31, 2021 9. Prepare a post-closing trial balance