Vanessa Wilson deposited $197 in a savings account at the end of each month for four years. If the accumulated value of the deposits was $11,400 and interest was compounded semi-annually, what was the rate of interest? Provide an answer correct to 3 decimal places. Do not include the percent sign, %, in your answer. Interest rate = What period of time is required for $115 deposited by Ellen Sui at the end of each month at 12.2% compounded quarterly to grow to $16,000? Hint: As you have set the calculator to consider monthly payments, the answer the calculator gives you, N, is in months. (Provide an answer correct to 3 decimal places.) N (number of payments) =