7. On October 15, a credit card account had a balance of $515. A purchase of $75 was made on October 20, and a payment of $250 was made on October 28. The interest on the average daily balance is 1.8% per month. Find the finance charge on the November 15 bill. 8. A home is purchased for $156,000 and a 12% down payment is required. How much must be given to the bank