Identify the conic section that the polar equation represents. Describe the location of a directrix from the focus located at the pole.r = 
A. ellipse; The directrix is 1 unit(s) to the left of the pole at x = -1.
B. ellipse; The directrix is 1 unit(s) to the right of the pole at x = 1.
C. hyperbola; The directrix is 1 unit(s) to the right of the pole at x = 1.
D. hyperbola; The directrix is 1 unit(s) to the left of the pole at x = -1.
Answer: D
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A. True B. False
Find the period of the function.y = cos 3x
A. 1
B. 2?
C. 3
D. 
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Fill in the blank(s) with the appropriate word(s).
Solve the inequality. Express your answer using interval notation.8x + 5 > 7x + 8
A. (13, ?)
B. [3, ?)
C. (3, ?)
D. (-?, 3]