This is how im typing up my assignment. I don't know to do these journal entries, please help

Question Three Terry's Stop n' Go had the following transactions during December, the last month of the accounting period: Dec. 1 Sold merchandise on credit for $6,000, cost $4,000 terms 1/10, n 30. Purchased merchandise for cash. $900. Purchased merchandise on credit for $4.600, terms 2/10, n 30. Issued a credit memorandum for $500 to a customer who returned merchandise purchased November 29, cost $300. 11 Received payment for merchandise sold December 1. 15 Received a credit memorandum for $500 for the return of faulty merchandise purchased on December 4. 18 Paid freight charges of $100 for merchandise ordered last month. 24 23 Paid for the merchandise purchased December 4 less merchandise returned. Sold merchandise on credit for $8.000. terms 1/10 n 30, cost $6.500. 31 Received payment for merchandise sold on December 24. Prepare general journal entries to record these transactions, using a perpetual inventory system