Answer:
Date Account Titles Debit Credit
Oct 1 Cash $16,800
Common Stock $16,800
Oct 2 No journal entry - -
Oct 3 Office Furniture $2,500
Accounts Payable $2,500
Oct 6. Accounts Receivable $3, 400
Service Revenue $3,400
Oct 27 Accounts Payable $1,100
Cash $1,100
Oct 30 Salaries Expense $2,650
Cash $2,650