Name: Period: Date: Properties of Logarithms Assignment
Name: _________________________________________________ Period: ___________ Date: ________________
Properties of Logarithms Assignment
Use the properties of logarithms to evaluate expressions:
1. log3 37
4. log6 72 - log6 2
2. 2log2 5
5. log3 915
3. log 4 + 2 log 5
6.
log7
1 75
Write each logarithmic expression as a single logarithm:
7. log2 7 + log2 3
10. log + log
8.
1 2
log5
36
-
log5
3
11. log 3 - 2 log
9.
1 2
log3
25
-
1 3
log3
1000
12. 3(2 log7 2)
Evaluate logarithmic expressions: 13. log 30 - log 3
16. log0.5 4 + log5 25
14. 5log5 10-1 15. 10log15 -log 2
17. log2 25 log5 2 18. log2 9 log3 4
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Name: _________________________________________________ Period: ___________ Date: ________________
Properties of Logarithms Assignment
Answers: Use the properties of logarithms to evaluate expressions: 1. log3 37 = 75
2. 2log2 5 = 5
3. log 4 + 2 log 5 = log(4 52) = log 100 = 2
4.
log6
72
-
log6
2
=
log6
72 2
=
log6
36
=
2
5. log3 915 = log3 32(15) = log3 330 = 30
6.
log7
1 75
=
log7
7-5
=
-5
Write each logarithmic expression as a single logarithm: 7. log2 7 + log2 3 = log2 7(3) = = log2 21
8.
1 2
log5
36
-
log5
3
=
log5
361/2
-
log5
3
=
log5
6 3
= log5 2
9.
1 2
log3
25
-
1 3
log3
1000
=
log3
25 31000
=
log3
5 10
=
log3
1 2
10. log + log = log
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Name: _________________________________________________ Period: ___________ Date: ________________
Exploring Exponential Models Assignment
11.
log
3
- 2 log
=
log
3
=
log 3
12. 3(2 log7 2) = 6 log7 2 = log7 26 = log7 64
Evaluate logarithmic expressions:
13.
log 30 - log 3
=
log 30
3
=
log 10 =
log 101/2
=1
2
14. 5log5 10-1 = 5log5 10-log5 5 = 5log5 2 = 2
15. 10log15 -log 2 = 10log110 = 10log 10-1 = 10-1 = 1
10
16. log0.5 4 + log5 25 = log0.5(0.5)-2 + log5(5)4 = -2 + 4 = = 2
17. log2 25 log5 2 = = 1
18. log2 9 log3 4 = 4
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