Use Gauss-Jordan elimination to find the solution. Write the solution as an ordered triple.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (0, -6, 1)
B. (0, 6, -1)
C. (3, 0, -4)
D. (-3, 0, 4)
Answer: A
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Find the area of the specified region.Inside the graph of r = 3 + cos 3?
A. 19? + 
B. 
C. 19?
D. 
+ 
Using Green's Theorem, find the outward flux of F across the closed curve C.F = (-y - ey cos x)i + (y - ey sin x)j ; C is the right lobe of the lemniscate r2 = cos 2? that lies in the first quadrant.
A. 0
B. 
C. 
D. 1
Order the decimals from smallest to largest.1.09, 1.9, 1.099, 1.999
A. 1.099, 1.09, 1.999, 1.9 B. 1.09, 1.099, 1.9, 1.999 C. 1.09, 1.9, 1.099, 1.999 D. 1.999, 1.9, 1.099, 1.09
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