1. 8.2 Interest Equations Key Q-How is an exponential function used to find interest? These are all money problems so you should have two decimal places.

2. Compound Interest c Starting amount r Rate n How many times it is compounded in one year t Time

3. You deposit $1500 into an account that is compounded quarterly at a rate of 3.2%. How much money do you have after 7 years?

4. You deposit $2000 into an account that is compounded monthly at a rate of 2.83%. How much do you have after 3 years?

5. Continuously Compounded Interest P Starting amount r Rate t Time

6. You deposit $500 into an account that is compounded continuously at a rate of 6%. How much do you have after three years?

7. You deposit $900 into an account that is compounded continuously at a rate of 1.4%. How much do you have after ten years?

8. The number e Also known as natural base e Euler number What is the value of e?

10. Is an exponential function with e growth or decay? If the exponent is positive it is a growth function, if the exponent is negative it is a decay function.

11. Simplifying expressions