Modeling with Exponential and Logarithmic Equations — Unit test Answers
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41
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What is the solution to
A
x = negative 95
B
x = negative 5
C
x = 5
D
x = 95
42
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What is the solution to the equation
A
mc012-2.jpg
B
mc012-3.jpg
C
mc012-4.jpg
D
mc012-5.jpg
43
Which expression is equivalent to ?
A
4 log Subscript 12 Baseline x + one-half log Subscript 12 Baseline (x cubed minus 2) minus 5 log Subscript 12 Baseline (x times 1)
B
4 log Subscript 12 Baseline x + one-half log Subscript 12 Baseline StartFraction x cubed Over 2 EndFraction minus 5 log Subscript 12 Baseline 1
C
log Subscript 12 Baseline 4 x + one-half log Subscript 12 Baseline (x cubed minus 2) minus 5 log Subscript 12 Baseline (x) + 1
D
4 log Subscript 12 Baseline x + one-half log Subscript 12 Baseline (x cubed minus 2) minus 5 log Subscript 12 Baseline (x + 1)
44
If , what is the value of s?
A
–1B
0C
1D
no solution45
The range of which function is ?
A
y = 2xB
y = 2(5x)C
y = 5x +2D
y = 5x + 246
What is the true solution to the logarithmic equation below?
A
x = 0
B
x = two-ninths
C
x = four-ninths
D
x = two-thirds
47
What is the range of the function
A
all real numbers less than –1B
all real numbers greater than –1C
all real numbers less than 1D
all real numbers greater than 148
The intensity, or loudness, of a sound can be measured in decibels (dB), according to the equation , where I is the intensity of a given sound and is the threshold of hearing intensity. What is the intensity, in decibels, [I(dB)], when ?
A
8B
9C
19D
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