Exercise 7-3 Sales on store credit card LO C1 Z-Mart uses the perpetual inventory system and has its own credit card. Z-Mart charges a per-month interest fee for any unpaid balance on its store credit card at each month-end. Apr. 30 z-Mart sold merchandise for $1,300 (that had cost $800) and accepted the customer's z-Mart store credit card. May 31 Z-Mart recorded $7 of interest earned from its store credit card as of this month-end. Prepare journal entries to record the above credit card transactions of Z-Mart. View transaction list Journal entry worksheet