1. Chapter 3 Exponents and Logarithms
Test Review Game
Chapter 3
Exponents and Logarithms

2. Box-wad-of-paper 1 5 9 13 17 21 25 29 2 6 10 14 18 22 26 30 3 7 11 15 19 23 27 4 8 12 16 20 24 28

3. Work review problems from the board. (Use these to study.)
Agenda
Get quiz back.
Work review problems from the board. (Use these to study.)
Test tomorrow!!!!

4. 1
Solve.
52x = 59x + 7
x = -1

5. 2
Solve.
x = -2, 5
Why?

6. 3
Solve.
x =

7. 4
Solve.
27x = 800
x = ?

8. 5
Solve.
logx 512 = 3
x = 8

9. 6
Solve.
log8 (3x - 6) = log8 (9x + 23)

10. 7
Solve.
log7 (x2 - 5) = log7 (59)

11. 8
Solve.
log9(x + 3) = log92x
x = ?

12. 9
Rewrite as log, approximate
3x = 72
x =

13. 10
Rewrite as log, approximate
7x = 23.4
x =

14. 11
Rewrite as log, approximate
53x = 37
x =

15. 12
Write in logarithmic form.
82 = 64
log8 64 = 2

16. 13
Write in logarithmic form.
93 = 729
log9 729 = 3

17. Write in logarithmic form.14
Write in logarithmic form.

18. 15
Write in logarithmic form.
65 = 7776
log = 5

19. Write in exponential form.16
Write in exponential form.

20. 17
Write in exponential form.
log = 3
113 = 1331

21. 18
Write in exponential form.
log5 625 = 4
54 = 625

22. Write in exponential form.19
Write in exponential form.

23. 20
Evaluate -4

24. 21
Evaluate 4

25. 22
Evaluate -2

26. 23
Expand
log3 (27x)2
2(log log3 x)
= 2log log3x

27. 24
Expand

28. 25
Condense

29. 26
Condense

30. 27
Rewrite in exponential form, evaluate
log =x
X=3

31. 28
Rewrite in exponential form, evaluate
log2128=x
X=7

32. 29
A bacteria culture starts with 6500 bacteria. After 2.5 hours, there are 208,000 bacteria present. What is the length (in minutes) of the doubling period?
t=.5 hours, 30 minutes

33. 30
The world population doubles every 35 years. In 1980 the population was 4.5 billion. Assuming that the doubling period remains at 35 years, estimate the population in the year 2120.
72 billion people