1. #1

3. #2

5. #3 Graph by hand.

7. #4

9. #5 If $5000 is invested at 9% interest, find the amount after three years if the interest is compounded (a) monthly (b) quarterly (c) continuously.

10. If $5000 is invested at 9% interest, find the amount after three years if the interest is compounded (a) monthly (b) quarterly (c) continuously.

11. #6 Write the equation in logarithmic form:

13. #7 Solve for x:

15. #8 Write as a single logarithm.

17. #9 Using your calculator and the change of base formula, evaluate.

19. #10 Use your calculator to solve for N:

21. #11 Graph by hand.

23. #12 Determine the domain of

25. #13 Graph by hand

27. #14 True or false:

29. #15

31. #16 Solve for x:

33. #17 Solve for x:

35. #18 Six thousand dollars is deposited into a fund at an annual percentage rate of 13%. Find the time required for the investment to double if the interest is compounded continuously.

37. #19 Use a graphing utility to find the points of intersection of the graphs of

39. #20 Use a graphing utility to find the power model for the data (1, 1), (2, 5), (3, 8), and (4, 17) in the form.

40. (1, 1), (2, 5), (3, 8), and (4, 17)

41. #21 For selected years from 1980 to 2000, the average salary y (in thousands of dollars) for public school teachers for the year t can be modeled by the equation where t = 10 represents 1980. During which year did the average salary for public school teachers reach $40,000?

42. #21 For selected years from 1980 to 2000, the average salary y (in thousands of dollars) for public school teachers for the year t can be modeled by the equation where t = 10 represents 1980. During which year did the average salary for public school teachers reach $40,000?

43. #22 On a college campus of 5000 students, one student returns from vacation with a contagious flu virus. The spread of the virus is modeled by where y is the total number infected after t days. The college will cancel classes when 40% or more of the students are infected. (a) How many students are infected after 5 days? (b) After how many days will the college cancel classes?

44. On a college campus of 5000 students, one student returns from vacation with a contagious flu virus. The spread of the virus is modeled by where y is the total number infected after t days. The college will cancel classes when 40% or more of the students are infected. (a) How many students are infected after 5 days? (b) After how many days will the college cancel classes?