1.An invoice from Delaney Conference Supplies for $837.22 is dated October 22 with terms 3/20, 1/30, n/60.What is the date on which the invoice should be paid to obtain the best discount and how much should be paid?

2.Catherine Gates represents MacDougall's Auto Parts Co. Ltd. She is paid $760 per month plus a 5% commission on all sales over $10,000 basic quota. In July, Catherine's sales for the month totaled $40,000. What were her total earnings?

3.Thunder Hill Ski Club ordered parts for repairs to their snowmaking equipment at a list price of $33,648. The wholesaler allowed a 15% trade discount off the invoice plus a 12% discount for the bulk order. Calculate the final amount of the invoice.