1. Honors Algebra 2 7.1 DAY 1 EXPONENTIAL GROWTH & DECAY GRAPHS

2. CONCEPT

3. EXAMPLE 1 xy x y

4. CONCEPT

5. EXAMPLE 3B – YOU TRY xy x y

8. EXAMPLE 1 xy x y

9. EXAMPLE 4 xy x y

10. EXAMPLE 5 xy x y

11. ALGEBRA 2 7.1 (Day 2) Applications of Exponential Graphs

12. FORMULA

13. In 2006, there were 1,020,000,000 people worldwide using the Internet. At that time, the number of users was growing by 19.5% annually. Write a model to estimate the number of people using the Internet in the year 2016. EXAMPLE 1

14. In 2006, there were about 2,000,000,000 people worldwide using cellular phones. At that time, the number of users was growing by 11% annually. Write a model to estimate the number of people using cell phones in the year 2016. EXAMPLE 2

15. FORMULA

16. The pressure of the atmosphere is 14.7 lb/in 2 at Earth’s surface. It decreases by about 20% for each mile of altitude up to about 50 miles. Estimate the atmospheric pressure for an altitude of 24 miles. EXAMPLE 3

17. The pressure of a car tire with a bent rim is 34.7 lb/in 2 at the start of a road trip. It decreases by about 3% for each mile driven due to a leaky seal. Estimate the air pressure of the tire after 15 miles. EXAMPLE 4