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Name _____________________________
Date ___________________

Logarithms
(Answer ID # 0451470)
Solve for the unknown.

1.  
 log (1/2) 16 + log (1/3) 9 = b
2.  
 log 16 4 - log 27 3 = 
1

6
3.  
 log u 8 + log (1/3) 27 - log (1/3) 81 = -2
4.  
 log 7  
1

2401
  + log 8  
1

64
  + log 2  
1

64
  = c
5.  
 log (1/2)  
1

4
  - log (1/3)  
1

27
  = r
6.  
 log 16 4 - log 4 (x + 953) = 
-9

2
7.  
 log 4 256 + log 4  
1

16
  = 2
8.  
 log 81 9 + log 7 2401 - log 2 (x - 6) = 
-3

2
9.  
 log 81 3 - log (1/3) 81 - log 9  
1

729
  - log (1/2)  
1

4
  = 
21

4
10.  
 log (1/2) 4 + log 4 8 + log 3 q = 
11

2
11.  
 log (1/4)  
1

64
  + log 2  
1

32
  - log 9 (75 + x) - log 27 9 = 
-14

3
12.  
 log 5  
1

25
  + log 16 4 - log (1/3)  
1

9
  = m
13.  
 log 5 v + log (1/3) 9 + log 9 81 = -4

 

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