4. You are given: - An investor makes annual deposits of $7500 into an account at the end of each year for the next 30 years. - These deposits earn interest at an effective annual rate of 3.8% with the interest paid at the end of each year. - The investor reinvests these interest payments into a second account that earns an effective annual interest rate of 4.7%. a) (9 points) Calculate the total amount in the two accounts at the end of the 30-year period. b) ( 5 points) Calculate the overall yield rate for the 30-year period. c) (2 points) Let i1 denote the overall yield rate over a t-year period. What is limti, Note that the annual deposits are only made for 30 years. You do not need to show supporting work for this