1. If $4,000 was invested for 15 years and grew to $16,000 what annual interest rate was earned? 2. What is the present value of $40,000 assuming an annual rate of 9% for 10 years? 3. How many years would it take for an investment of $50,000 to grow to $150,000 if an annual rate of 6% was earned? 4. You won a lawsuit against a professor for verbal abuse and were offered $100,000 per year for 10 years, or a lump sum of $725,000. Assuming an interest rate of 6% which should you take? 5. You invested $3,000 per year, for 40 years, into a 401K plan which was matched by your company. Assuming you earned 9% annually, how much is it worth