2. Wednesday, March 4 Use the Rule of 72 to find the length of time to double investments. Graph Reciprocal Functions on a coordinate system.

3. Notes Over 6.6 The Reciprocal Function The Rule of 72 The number of years (y) for money to double in an investment at rate (r) is evaluated by: 1.How long will it take for your money to double if it is invested at an annual interest rate of 4%?

4. Notes Over 6.6 The Reciprocal Function The Rule of 72 The number of years (y) for money to double in an investment at rate (r) is evaluated by: 2.Suppose Lea’s money doubles in 14.4 years. At what annual interest rate did Lea invest her money?

5. Notes Over 6.6 The Reciprocal Function Draw a table for each function. Then graph each function on your own paper. xy

6. Notes Over 6.6 The Reciprocal Function Draw a table for each function. Then graph each function on your own paper.

7. Notes Over 6.6 The Reciprocal Function Draw a table for each function. Then graph each function on your own paper.

8. Notes Over 6.6 The Reciprocal Function Draw a table for each function. Then graph each function on your own paper.

9. Notes Over 6.6 Extra Practice Worksheet 6.6 Pg. 6-43, Lesson 6.6#6-23 Worksheet 6.5/6.6