Worksheetscommon logs
Total questions: 11
Worksheet time: 24mins
Name
Class
Date
1.
Rewrite log28 = 3 in exponential form
a)
28 = 3
b)
23 = 8
c)
32 = 8
d)
83 = 2
2.
The common logarithm has what base?
a)
10
b)
0
c)
e
d)
-e
3.
Log with a base "e" (loge) is the same thing as...
a)
"e"
b)
Natural Logarithm (LN)
c)
Common Logarithm (Log)
d)
Natural Log, base "e"
LNe
LNe
4.
Rewrite using Log Loop, then Solve
a)
x=3
b)
x=-3
c)
x=9
d)
x=-9
5.
Without a calculator, determine which of the following ISN"T possible. Check all that apply.
a)
log2 (x - 4) when x = 4
b)
log3 (x+3) when x = 0
c)
-2log5 (x-1) when x = 0
d)
1/2 log (x+4) when x = -2
6.
Write log3 81 = 4 in exponential form.
a)
814=3
b)
813=4
c)
43=81
d)
34=81
7.
Describe the transformation to the parent function:
g(x) = -2 log x+4
g(x) = -2 log x+4
a)
Reflected, Expanded Vertically; Up 4
b)
Expanded Vertically; Down 4
c)
Reflected; Expanded Vertically; Down 4
d)
Expanded Vertically; Up 4
8.
y=log7 express in exponential form:
a)
y=107
b)
7=10y
c)
10=7y
d)
10=y7
9.
4ln1+3eln2−21lne20 evaluate
a)
4
b)
-4
c)
8
d)
-8
10.
natural log has a base of?
a)
e
b)
No base
c)
10
d)
n
11.
common log has a base of?
a)
no base
b)
e
c)
10
d)
0
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