Answer:
Date Account Titles Debit Credit
Sept 6. Inventory $1,680
Accounts Payable $1,680
Sept 9. Inventory $60
Cash $60
Sept 10 Accounts Payable $58
Inventory $58
Sept 12 Accounts Receivable $810
Sales Revenues $810
Cost of Goods Sold $580
Inventory $580
Sept 14 Sales returns $45
Accounts Receivable $45
Inventory $33
Cost of Goods Sold $33
Sept 20 Accounts Receivable $740
Sales Revenues $740
Cost of Goods Sold $570
Inventory $570