Solving Logarithmic Equations using Technology Answers
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1
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What is the solution of ?
A
–18B
–2C
2D
102
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What is the solution of ?
A
4B
5C
15D
203
What is the value of ?
A
–6B
–2C
2D
64
What is the value of ?
A
–3B
Negative one-third
C
One-third
D
35
Which equation is equivalent to ?
A
3 squared = left-bracket log Subscript 3 Baseline (x + 5) right-bracket cubed
B
2 cubed = left-bracket log Subscript 3 Baseline (x + 5) right-bracket squared
C
3 squared = x + 5
D
2 cubed = x + 5
6
Which equation is equivalent to ?
A
2 Superscript x Baseline = 36
B
x squared = 36
C
36 Superscript x Baseline = 2
D
x squared = 36 squared
7
What is the value of ?
A
1B
2C
4D
88
What is the value of log 43? Use the calculator. Round your answer to the nearest tenth.
A
0.6B
1.6C
3.8D
4.79
The magnitude, M, of an earthquake is defined to be , where I is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and S is the intensity of a “standard” earthquake, which is barely detectable. Which equation represents the magnitude of an earthquake that is 10 times more intense than a standard earthquake?
A
M = log StartFraction I Over S EndFraction
B
M = log (10 S)
C
M = log StartFraction 10 S Over S EndFraction
D
M = log StartFraction 10 Over S EndFraction
10
Which equation has x = –6 as the solution?
A
log Subscript x Baseline 36 = 2
B
log Subscript 3 Baseline (2 x minus 9) = 3
C
log Subscript 3 Baseline 216 = x
D
log Subscript 3 Baseline (negative 2 x minus 3) = 2
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