User Create a General Journal entry in accordance with GAPP and using the periodic inventory system and the net method for the following entries; Dec 7: Sold inventory with a gross sales price of $13,000 to a new customer on account. The customer is Jennings (Customer # 110-48) (Invoice # 981). Terms 2/15, n/30 Create a General Journal entry in accordance with GAPP and using the periodic inventory system and the net method for the following entries Dec 14: Jennings (Customer #110-48) returned all the inventory purchased on December 7.