On September 1, Hydra purchased $13,300 of inventory items on credit with the terms 1/15, net 30, FOB destination. Freight charges were $280. Payment for the purchase was made on September 18. Assuming Hydra uses the perpetual inventory system and the net method of accounting for purchase discounts. Pass necessary journal entry to record the purchase of inventory on September 1 and the payment of the purchase on September 18.