Describe the given set of points with a single equation or with a pair of equations.The set of points equidistant from the points (0, 0, -9) and (0, 0, -9)
A. x + y = -9
B. z > -9 and z < -9
C. z = -9
D. x + y = 0 and -9 < z < -9
Answer: C
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Calculate the flux of the field F across the closed plane curve C.F = y3i + x3j; the curve C is the closed counterclockwise path formed from the semicircle 
0 ? t ? ?, and the straight line segment from (-2, 0) to (2, 0)
A. 4 B. 8 C. - 4 D. 0
Use the information given about the angle ? to find the exact value of the indicated trigonometric function.sin ? = 
, 0 < ? < 
Find sin 
.
A. 
B. 
C. 
D. 
Find absolute maximum and minimum values of the function, if they exist, over the indicated interval. Where no interval is specified, use the real line. List your answers in terms of ordered pairs.
f (x) = x (5? x)
Let x be a number. Translate the English phrase or sentence into a mathematical expression. Four divided by a number
A. x ÷ (-4) B. 4 - x C. 4 ÷ x D. -4x