Suppose an individual wants to have exactly $400,000 available for her child's education. (a) Find the amount that would have to be invested at 12% compounded continuously, if the number of years until college is 9 years. (Round your answer to the nearest cent.) (b) Find theamount that would have to be invested at 12% compounded continuously, if the number of years until college is 18 years. (Round your answer to the nearest cent.)