Determine whether the following is an expression or an equation. If it is an expression, simplify if possible and evaluate it for x = 2. If it is an equation, solve it.
+ 
A. Expression; 1; 2
B. Equation; 0
C. Expression; 1; 1
D. Equation; 1
Answer: C
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The decibel, a measure of loudness, is related to the relative intensity of sound by the formula
Decibels 
Relative intensity).
If relative intensity is multiplied by 104.71, how are decibels affected?
?
A. Decibels are increased by 20.2. B. Decibels are decreased by 2.02. C. Decibels are increased by 2.02. D. Decibels are decreased by 20.2.
Solve the system by the addition method.
A. {(4, 5), (-4, 5), (4, -5), (-4, -5)} B. {(4, 5), (-4, -5)} C. {(5, 4), (-5, -4)} D. {(5, 4), (5, -4), (-5, 4), (-5, -4)}
Use the limit definition of the partial derivative to compute the indicated partial derivative of the function at the specified point.Find 
at the point (-8, -5): f(x, y) = 5 - 4xy + 6xy2
What will be an ideal response?
Find the exact value of y, or state that y is undefined.y = sec-1 
A. - 
B. 
C. - 
D. 