please help me with all 6 journal entries, thank you

Hit The Slopes: Chart of Accounts Cash, Accounts Receivable, Supplies, Merchandise Inventory, Estimated Returns Inventory, Equipment, Accumulated Depreciation, Accounts Payable, Refunds Payable. Common Stock, Retained Earnings, Sales Revenue, Sales Discount Forfeited, Cost of Goods Sold, Salary Expense, Rent Expense, Depreciation Expense Prepare journal entries for the following: Oct 3 Purchased 30 pairs of skis at $40 each for cash. merchandise inventory 1200 cash 1200 Oct 5 Sold 10 pairs of skis at $90 each on account. (Our cost $400) Accounts Receivable 900 Saue Revenue 900 Cocks 4,000 meron muentary 4,000 Oct 6 Returned 1 pair of skis from the Oct 3 purchase. Accants payable 40 merchandise Inventory 40 Oct 8 Purchased 40 pairs of skis at $40 each on account. Terms 2/10, n/30. Oct 9 Customer from Oct 5 pays in full. Oct 10 Paid for skis purchased on Oct 8