13. A shipment was received on June 10 and carried an invoice date of June 7. Cash discount terms are 7/10 net 30 20X. (a) What is the discount date? (b) On what date is the entire bill due? 14. Delivery charges are $100. The invoice that a retailer receives is for $5,320. (a) What amount does the retailer owe if the transportation terms are FOB origin? (b) What amount does the retailer owe if the transportation terms are FOB destination? 15. A retail store in Columbia, SC places an order with a factory in Chicago. The order is delivered to the store on September 10 with an invoice ate of September 7. Delivery charges are $100. The invoice totals $10,000. Terms are 5/10 net 30 FOB Columbia, SC. How much does the retailer owe if the bill is paid on September 15