5. If an invoice is dated September 14 with terms of 2/15, net 30, and the buyer chooses not to take the discount, by when should the payment be made? a. September 24 b. September 29 c. October 14 d. October 17 6. A retailer purchases merchandise with a catalog list price of $42,000. The retailer receives a 20% trade discount and has credit terms of 1/10, n/30. How much cash will be needed to pay this invoice within the discount period? a. $42,000 b. $33,200 c. $33,264 d. $41,580