9. The exchange rate is US$0.9063 per Canadian dollar. If over the course of a year the Canadian dollar appreciates by $0.0644 per C$, how many more or less US dollars are purchased with C$1,750? 10. An invoice for $37,650 is dated June 24 with terms of 2/10, 1/30, ROG. Merchandise is received on June 29. If a payment of $20,000 is made on July 5 and another payment of $10,000 is made on July 26, what is the balance remaining on the invoice? Assume all payments are received on the dates indicated