Suppose an investment offers to quintuple your money in 18 months (dont believe it). What rate of return per quarter are you being offered? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

You are planning to make annual deposits of $3,960 into a retirement account that pays 8 percent interest compounded monthly. How large will your account balance be in 25 years? (Do not round intermediate calculations and round your final answer to 2 decimal places, e.g., 32.16.)