I would like help with all the questions but number 1 and 2 would be helpful so I can figure out if I'm even on to the right direction.

P7-26A Using all journals, posting, and balancing the ledgers Tulsa Computer Security uses the perpetual inventory system and makes all c on terms of n/30. Tulsa completed the following transactions during May: t sales May 2 Issued invoice no. 913 for sale on account to K. D. King, $2,200 $1,500) 3 Purchased merchandise inventory on credit terms of 3/10, n/60 from Henderson Co., $2,900 5 5 8 Sold merchandise inventory for cash, $1,800 (cost, $350), Issued check no. 532 to purchase furniture for cash, $2,950. Collected interest revenue of $1,350 9 Issued invoice no. 914 for sale on account to Berkner Co., $s,700 $2,000) Purchased merchandise inventory for cash, $1,000, issuing check no. 533. Received cash from K. D. King in full settlement of her account receivable from the sale on May 2 Issued check no. 534 to pay Henderson Co. the net amount owed from May 3. Round to the nearest dollar 10 12 13 13 Purchased office supplies on account from Magyar, Inc, $500. Terms were 15 Sold merchandise inventory on account to M. O. Small, issuing invoice no. 18 Issued invoice no. 916 for credit sale to K. D. King, $300 (cost, $150) n/EOM. 915 for $850 (cost, $400) 19 Received cash from Berkner Co. in full settlement of its account receivable from May9 Distributing, $2,100 $500. 20 Purchased merchandise inventory on credit terms of n/30 from Silva 22 Purchased furniture on credit terms of 3/10, n/60 from Henderson Co., 22 Issued check no. 535 to pay for insurance coverage, debiting Prepaid 24 Sold office supplies to an employee for cash of $125, which was Tulsa's Insurance for $1,400 cost. Received bill and issued check no. 536 to pay utilities, $550. Purchased merchandise inventory on credit terms of 2/10, n/30 from 25 28 Magyar, Inc., $575 Returned damaged merchandise inventory to Magyar, Inc.,issuing a debit 29 memo for $575. Sold merchandise inventory on account to Berkner Co., issuing invoice no. 917 for $2,400 (cost, $1,400) Issued check no. 537 to pay Magyar, Inc. in full for May 13 purchase. Received cash in full from K. D. King on credit sale of May 18. Issued check no. 538 to pay monthly salaries of $2,250. 29 30 31 31