DATE TRANSACTIONS June 1 Sold a tent and other items on credit to Justin McGowan; issued Sales Slip 1101 for $700 plus sales tax of $70. 2 Sold a backpack, an air mattress, and other items to Ann Teng; issued Sales Slip 1102 for $550 plus sales tax of $55. 3 Sold a lantern, cooking utensils, and other items to Tony Morales; issued Sales Slip 1103 for $280 plus sales tax of $28.