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Worksheets10.10 Solve using Common Logs and Change of Base
Total questions: 14
Worksheet time: 21mins
Name
Class
Date
1.
6x=40
a)
0.4857
b)
6.6667
c)
2.0588
d)
4.3032
2.
2.1(x+2)=8.25
a)
0.8442
b)
2.8442
c)
4.8442
d)
6.8442
3.
7(x2)=20.42
a)
1.5502
b)
-1.2451
c)
±1.2451
d)
2.4031
4.
8x=40
a)
1.5637
b)
0.5637
c)
2.7740
d)
1.7740
5.
5x=55
a)
2.4899
b)
0.4899
c)
1.4899
d)
-0.4899
6.
2.9(x−4)=8.1
a)
1.9647
b)
0.5090
c)
-2.0353
d)
5.9647
7.
4(x+2)=14.5
a)
3.9290
b)
1.9290
c)
-0.0710
d)
0.0710
8.
Using the change of base rule, what is this logarithm equivalent to?
a)
A
b)
B
c)
C
d)
D
9.
Using the change of base rule, what is this logarithm equivalent to?
a)
A
b)
B
c)
C
d)
D
10.
Solve the log by using change of base )
log432
a)
8
b)
5/2
c)
2/5
d)
3/2
11.
Use the change of base rule to rewrite this problem:
log575
a)
log(75)/log(5)
b)
log(5)/log(75)
12.
Use the change of base rule to rewrite this problem:
log364
a)
log(64)/log(3)
b)
log(3)/log(64)
13.
Use the change of base rule to rewrite this problem:
log7729
a)
log(7)/log(729)
b)
log(729)/log(7)
14.
Use the change of base rule to rewrite this problem:
log6216
a)
log(6)/log(216)
b)
log(216)/log(6)
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