Pleaswe ensure it is in exact form, not decimal please.

How much money needs to be invested in order to earn $400 interest over 5 months if the interest rate is 5% compounded monthly? The investment amount should be Note: Do not use your calculator for this problem; type in an expression which represents the exact answer. AB Investment A is currently worth $9000, and is growing at a rate of 7% per year compounded continuously. Investment B is currently worth $6000 is growing at a rate of 12% per year compounded semi-annually. Determine how long until the two investments have the same value. Answer in years: The investments will have the same value after years. Note: Do not use your calculator for this problem; type in an expression which represents the exact