i know the 8000 is correct but idk how to find cash and merchandise inventory

Prepare journal entries to record the following transactions for a retail store. The company uses a perpetual inventory system and to gross method Apr. 2 Purchased $4,600 of merchandise from Lyon Company with credit terms of 2/15, 1/60, invoice dated April 2, anc FOB shipping point. 3 Paid $300 cash for shipping charges on the April 2 purchase. 4 Returned to Lyon Company unacceptable merchandise that had an invoice price of $600. 17 Sent a check to Lyon Company for the April 2 purchase, net of the discount and the returned merchandise. 18 Purchased $8,500 of merchandise from Frist Corp. with credit terms of 1/10, n/30, invoice dated April 18, anc FOB destination. 21 After negotiations, received from Frist a $500 allowance toward the $8,500 owed on the April 18 purchase. 28 Sent check to Frist paying for the April 18 purchase, net of the allowance and the discount. View transaction list Journal entry worksheet 5 6 7 > Sent check to Frist paying for the April 18 purchase, net of the allowance and the discount Note: Enter debits before credits: Date Debit Credit Apr 28 General Journal Accounts payable-Frist Cash Merchandise inventory 8,000