1. Warm Up: Using what we discovered yesterday, a population of 2500 M&M’s are subjected to Swine Flu for a week. How many M&M’s are left after that time period?

2. 8.1 Exponential Growth Objective: Use exponential growth functions to model real life situations

3. General form: or

4. Calculating Growth Factors: a.Increase of 5% b.Increase of 50% c.Increase of 19.8% d.Increase of 100% e.Increase of 200%

5. Ex. 1: In 1980, Colorado’s population was about 2.8 million. Since then, the population has increased by about 1.5% each year. a.Write an exponential growth function to model Colorado’s population growth. b.Approximate the population in 1990. c.When will the population exceed 4 million?

6. Ex. 2: Monthly benefits for Social Security in May 1992 was $23,307 million. Since then, benefits have increased by about 5.4% each year. a.Write an exponential growth function to model the growth of monthly Social Security benefits. b.Approximate the monthly benefits in 2002. c.In what year will the monthly benefits exceed $50,000 million?