Griffin Shoe Company records Sales Returns and Allowances, Sales Discounts and Credit Card Discounts as contra revenues July 12 Sold merchandise to customer factory store who charged the $400 purchase on her American Express card. Anerican Express charges a 2 percent credit card fee. Cost of goods sold was $275. July 15 Sold merchandise to customer Tat an invoice price of $5,620; teras 2/10, 130. Cost of goods sold was $2.500. July 20 Collected cash due fron Customer T. July 21 Before paying for the order, a customer returned shoes with invoice price of $1,400; cost of goods sold was 5840. Complete the following table by entering the amounts of the effects of each transaction, including the related cost of goods sold. (Indicate decreases with a minus sign.) Transaction Net Sales Cost of Goods Sold Gross Pront July 12 July 15 July 20 July 21