Solve and graph.2x ? 12
A. x > 6
B. x > 6
C. x ? 10
D. x ? 6
Answer: D
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Use properties to perform the calculations. Express answer in simplest form.
+ 
A. 
B. 
C. - 
D. - 
Write the following in simplest form using positive exponents.
16 ÷ 
4
A. 
4
B. 112
C. 
12
D. 
4
Give the domain, range, or period, as requested.Period of y = 5 cos x
A. 
B. 5
C. ?
D. 2?
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. 0.10 watt per square meter B. 0.40 watt per square meter C. 0.20 watt per square meter D. 0.80 watt per square meter