Problem 7, [6 pts] Jalil Jones has credit card balances of $800 for 18 days, $600 for 2 days, and $650 for 10 days. Assume an annual interest rate of 18 percent, 30 -day billing cycle and 20 -day grace period. How much is his interest charge using the average daily balance method, if the credit card gets paid off eight days after the statement due date