If you invest $9,000 today, how much will you have

1. In 2 years at 9 percent?
2. In 7 years at 12 percent?
3. In 25 years at 14 percent?
4. In 25 years at 14 percent (compounded semiannually)?

Show your calculations and give a brief summary of how you determined how to go about solving this problem.