Simplify.3 ? 8 + 8(7 + 6) + 3
A. 152
B. 627
C. 131
D. 89
Answer: C
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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.At a rock concert by The Who, the music registered a loudness level of 120 decibels. The human threshold of pain due to sound averages 130 decibels. Compute the ratio of the intensities associated with these two loudness level to determine by how much the intensity of a sound that crosses the human threshold of pain exceeds that of this particular rock concert.
A. The intensity of a sound that crosses the human threshold of pain is 100 times as intense as this rock concert. B. The intensity of a sound that crosses the human threshold of pain is 10 times as intense as this rock concert. C. The intensity of a sound that crosses the human threshold of pain is 0.1 times as intense as this rock concert. D. The intensity of a sound that crosses the human threshold of pain is 1000 times as intense as this rock concert.
Solve the problem. Use 3.14 for ?. Round your answer to the nearest hundredth.Glenda wants to glue glitter over a piece of felt shaped like a parallelogram with a height of 32 in. and a base of 54 in. If the glitter costs $0.90 per ft2, how much will it cost to cover the felt?
A. $1555.2 B. $43.20 C. $10.80 D. $129.60
Show that f and g are inverses of each other by verifying that f(g(x)) = x = g(f(x)).f(x) = 
; g(x) = x2
What will be an ideal response?
For those which are polynomial functions, find the degree, the leading term, and the leading coefficient.f(x) = 3x4 + 5 - 
x5
A. not a polynomial function
B. Degree: 4, leading term: -
x5, leading coefficient: -
C. Degree: 5, leading term: -
x5, leading coefficient: -
D. Degree: 5, leading term: 
x5, leading coefficient: 