Logarithms And Logarithmic Functions Worksheet With Answers Page 4
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27ANSWER:
7-3 Logarithms and Logarithmic Functions
D = {x | x > 0}; R = {all real numbers}
12. SCIENCE Use the information at the beginning of
16.
the lesson. The Palermo scale value of any object
can be found using the equation PS = log
R, where
10
SOLUTION:
R is the relative risk posed by the object. Write an
equation in exponential form for the inverse of the
function.
SOLUTION:
Rewrite the equation in exponential form.
ANSWER:
Interchange the variables.
R
PS = 10
ANSWER:
17. log
144 = 2
12
R
PS = 10
SOLUTION:
Write each equation in exponential form.
13. log
16 = 4
2
SOLUTION:
ANSWER:
2
12
= 144
18. log
1 = 0
9
ANSWER:
SOLUTION:
4
2
= 16
14. log
343 = 3
7
ANSWER:
SOLUTION:
0
9
= 1
Write each equation in logarithmic form.
ANSWER:
19.
3
7
= 343
SOLUTION:
15.
SOLUTION:
ANSWER:
20.
ANSWER:
SOLUTION:
16.
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ANSWER:
SOLUTION:
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