You had 20 shirts in your closet before you went shopping. Every week. you went to the mail and bought 3 times as many new shirts. Write an equation for the exponential equation, and determine the key features of this function.

Which account has the highest effective annual interest rate? not necessary but show how you got your answer.a. account 1: interest is compounded quarterly at an annual rate of 4.20%.b. account 2: interest is compounded monthly at an annual rate of 4.15%.c. account 3: interest is compounded semiannually at an annual rate of 4.10%d. account 4: interest is compounded annually at a rate of 4.25%.