An investment in which the principal is not guaranteed to be repaid us called a _________ investment. 2). Calculate the intrest on $200 at 12% compounded semiannually for 3 years using the compound Intrest Formula. Round your answer to the nearest cent. Answer:______. 3). The effective annual yield, also known as the annual percentage yeild, or APY, is the _____________ intrest rate that gives the same amount of intrest as a ________ rate over the same period of time.