Graph.x = -8
A. 
B. 
C. 
D. 
Answer: C
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Evaluate the integral which is given in cylindrical or spherical coordinates.
A. 
B. 
C. 
?
D. 
?
Decide whether or not the given equation is an identity.cos(x + y) cos(x - y) = cos2x - sin2y
A. Yes B. No
Solve the problem.A satellite dish is in the shape of a parabolic surface. Signals coming from a satellite strike the surface of the dish and are reflected to the focus, where the receiver is located. The satellite dish shown has a diameter of 16 feet and a depth of 7 feet. The parabola is positioned in a rectangular coordinate system with its vertex at the origin. Write an equation in the form of 
for the parabola used to shape the dish. 
A. y = 
x2
B. y = 
x2
C. y = 
x2
D. y = 
x2
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-1
A. 
B. 
C. 
D. 