4. You would like a yearly annuity of $6,000 for 10 years at a 4% annual interest rate. How much do you need to invest initially to achieve this goal? (Ans. $48,665) 5. For your retirement, you have $400,000 invested into an account at a 6% annual interest rate. How long will you receive yearly payments of $30,000? (Ans. 27.62 years) 6. You have $600 to put into a CD at a 7% annual interest rate. What is the value of the investment after 5 years? (Ans. $842)