Mr. Rodriguez opens a money market account with a 2% interest rate. He initially deposits $20,000 into the account. The interest is compounded semi-annually. A) How much money would he have in his account alter 15 years? B) Write an expression that represents the amount of money in his account after t years. C) Suppose the interest is compounded continuously, how long would it take for the value of the account to reach $40,Ou D) By what rate did the investment increase value after 15 years when compounded semi-annually