9. On June 18, an invoice dated June 18 for $6250.00 less 17%, 16%, terms 5/10, n/30, was received by Nova Distributors. a) What is the last day of the discount period? b) What is the amount due if the invoice is paid in full within the discount period? 8. An invoice shows a net price of $231.88 after discounts of 17.8%, 8.6%, 6.3%. What was the list price