Problem 16-13 Costs of Borrowing [LO 3] You've worked out a line of credit arrangement that allows you to borrow up to $80 million at any time. The interest rate is 401 percent per month. In addition, 5 percent of the amount that you borrow must be deposited in a noninterest-bearing account. Assume that your bank uses compound interest on its line-of-credit loans. a. What is the effective annual interest rate on this lending arrangement? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.9., 32.1 b. Suppose you need $45 million today and you repay it in five months. How much interest will you pay? Note: Do not round intermediate calculations and enter your answer in dollars, not millions, rounded to 2 decimal places, e.9. 1,234,567.89