1. [-/3 Points] DETAILS STITZCA3 6.5.010. If an initial principal P is invested at an annual rate r and the interest is compounded n times per year, the amount A in the account after t years is A = P( 1 + 5)n On May 31, 2009, the Annual Percentage Rate listed at Jeff's bank for regular savings accounts was 0.25% compounded monthly. Use the equation above to answer the following. (a) If P = 4000 what is A(6)? (Round your answer to the nearest cent. ) $ (b) Using the principal from part (a), solve the equation A(t) - 8000 for t. (Round your answer to two decimal places.) t = (c) What principal P should be invested so that the account balance is $2000 in three years? ( Round your answer to the nearest cent.) P = $ Additional Materials