Solve the linear equation.-7 + 23 = 12x - 2 - 11x
A. 14
B. -14
C. 18
D. 28
Answer: C
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Find the second derivative.y = 
- 7
A. 
x2
B. 
x
C. 17x
D. 17x - 7
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
Determine the real solutions to the system of nonlinear equations.x2 + y2 = 53(x - 1)2 + y2 = 40
A. (7, 2), (7, -2) B. (7, 2), (7, -2), (-7, 2), (-7, -2) C. (2, 7), (2, -7), (-2, 7), (-2, -7) D. (2, 7), (2, -7)
Find the consumer surplus and producer surplus.
?
Demand 
?
Supply 
?
A. Consumer surplus: $25,000,150Producer surplus: $12,500,400 B. Consumer surplus: $25,000,200Producer surplus: $12,500,300 C. Consumer surplus: $25,000,100 Producer surplus: $12,500,100 D. Consumer surplus: $25,000,050 Producer surplus: $12,500,200 E. Consumer surplus: $25,000,000 Producer surplus: $12,500,000