1. Sec. 4.1-4.3

2. Write the expression using logs: 2 x =7.2

3. log 2 7.2=x

4. If every horizontal line intersects the graph of a function f at no more than one point, the f is a(n) ____________ function.

5. one-to-one

6. Find the inverse: f(x) = 2x + 6

8. Write the expression in exponential form: log 2 M = 1.3

9. 2 1.3 = M

10. If the graph of every exponential function f(x) = a x, a>0, a not = 1, is decreasing, then a must be less than _________.

11. 1

12. Graph f(x)=4 x

13. (0,1) (1,4) (-1,1/4)

14. If f -1 denotes the inverse of a function f, then the graphs of f and f -1 are symmetric with respect to the line ___________.

15. y = x

16. Find the inverse: {(1,2),(2,8),(3,18),(4,32)}

17. {(2,1),(8,2),(18,3),(32,4)}

18. Graph f(x)=log 4 x

19. (1,0) (4,1) (1/4,-1)

20. What is the asymptote of the graph f(x)=5+e -x ?

21. y = 5

22. Solve: (1/5) 2-x = 25

23. x = 4

24. What is the domain of the function f(x)=3 x+2 ?

26. What is the domain ?

28. Find the exact value (without using a calculator)

29. 4

30. What is the domain of the function?

32. Determine if the two functions are inverses of each other:

33. no

34. Solve:

35. x = 2

36. What is the asymptote of the function h(x) = 3 + log(x + 2)?

37. x = -2

38. What is the domain of the function F(x) = log(2-x)?

40. Determine if the two functions are inverses of each other:

41. yes f(g(x)) = g(f(x)) =x