Identify the conic that the polar equation represents. Also, give the position of the directrix.r = 
A. ellipse, directrix perpendicular to the polar axis 3 right of the pole
B. hyperbola, directrix perpendicular to the polar axis 3 right of the pole
C. hyperbola, directrix perpendicular to the polar axis 3 left of the pole
D. ellipse, directrix perpendicular to the polar axis 3 left of the pole
Answer: C
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Determine all critical points for the function.f(x) = 
A. x = 0 and x = -4 B. x = 8 and x = 0 C. x = 4 D. x = -4
Is the function graphed below one-to-one?
A. Yes B. No
Solve the problem.A plane flying a straight course observes a mountain at a bearing of 31.8° to the right of its course. At that time the plane is 
from the mountain. A short time later, the bearing to the mountain becomes 41.8°. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?
A. 4.2 km B. 11.4 km C. 10.1 km D. 6.3 km
Solve the inequality graphically, numerically, or symbolically, and express the solution in interval notation. Where appropriate, round to the nearest tenth.
> 4
A. (-?, -0.5) ? (1.2, ?) B. (1.2, -0.5) C. (-?, 1.2) ? (-0.5, ?) D. (-0.5, 1.2)