The loudness L(x), measured in decibels, of a sound of intensity x, measured in watts per square meter, is defined as 
watt per square meter is the least intense sound that a human ear can detect. Determine the loudness, in decibels, of the sound.A particular Boeing 747 jetliner produces noise at a loudness level of 113 decibels. Find the intensity level (round to the nearest hundredth) in watt per square meter for this noise.
A. 0.40 watt per square meter
B. 0.10 watt per square meter
C. 0.20 watt per square meter
D. 0.80 watt per square meter
Answer: C
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = x, y = 0, x = 2, x = 3
A. 
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B. 
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C. 
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D. 
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Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.
?
A.
AB = 
Tuition for Student 1 is $1050, tuition for Student 2 is $821, and tuition for Student 3 is $772.
B.
AB = 
Tuition for Student 1 is $1061, tuition for Student 2 is $805, and tuition for Student 3 is $770.
C.
AB = 
Tuition for Student 1 is $1044, tuition for Student 2 is $821, and tuition for Student 3 is $748.
D.
AB = 
Tuition for Student 1 is $1051, tuition for Student 2 is $819, and tuition for Student 3 is $762.
Solve the problem.Find the equation of the line which contains P(1, 3) and which is parallel to the x-axis.
A. x = 3 B. x = 1 C. y = 1 D. y = 3
Evaluate.(-8)2
A. -16 B. -512 C. -64 D. 64