Check my work 15 Problem 5-50 Effective Interest Rate (L04) You've borrowed $4,485.03 and agreed to pay back the loan with monthly payments of $210. Assume the interest rate is 15% stated as an APR mits a. How long will it take you to pay back the loan? (Do not round intermediate calculations. Round your answer to the nearest whole eBook number.) Print Number of months References b. What is the effective annual rate on the loan? (Do not round Intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Efective annual rate