1. Chapter 8 Slide the Eraser

2. Question 1 write the following using exponents? 7 · 7 2 · 2 · 2 x · x · x· x · x· x · x

3. Question 2

4. Question 3

5. Question 4

6. Question 5

7. Question 6

8. Question 7

9. Question 8

10. Question 9

11. Question 10:

12. a) 2.834 x 10 2 c) 7.8 x 10 -1 b) 4.9 x 10 5 d) 1.23 x 10 -6

13. a) 34,690 c) 0.039 e) 5,600,000,000 b) 1.78 d) 0.00072

14. a) (1.4 x 10 4 )(7.6 x 10 6 ) c) (4.0 x 10 -2 ) 3 b)

15. Graphing Exponential Functions Make a table of values for t the function y = 5 x xy -2 0 1 2

16. Graphing Exponential Functions Make a table of values for t the function y = (1/3) x xy -2 0 1 2

17. You deposit $500 in an account that pays 8% annual interest compounded yearly. What is the account balance after 6 years? C= 500 r =.08 t = 6 y = 500(1+.08) 6

18. You bought a used car for $18,000. The value of the car will be less each year because of depreciation. The car depreciates at the rate of 12% per year. a) Write an exponential decay model to represent this situation. y = 18,000(1-.12) t b) Estimate the value of your car in 8 years. y = 18,000(1-.12) 8