Solve.
= 3
A. 
B. 240
C. 243
D. 60
Answer: D
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Find the focus and directrix of the parabola.x = 4y2
A. (0, 1/16); x = 1/16 B. (1/16, 0); x = -1/16 C. (1/4, 0); x = -1/4 D. (0, 1/16); y = -1/16
Discuss the equation and graph it.r = 
A. directrix parallel to polar
axis 2 below pole
focus (0, 0), vertex 
B. directrix perpendicular to polar
axis 2 left of pole
focus (0, 0), vertex 
C. directrix perpendicular to polar
axis 2 right of pole
focus (0, 0), vertex 
D. directrix parallel to polar
axis 2 above pole
focus (0, 0), vertex 
Find the focus and the directrix of the parabola.y = x2 + 18x + 82
A. Focus: 
; directrix: y = 
B. Focus: 
; directrix: y = 1
C. Focus: 
; directrix: x = 1
D. Focus: (-9, 2); directrix: y = 0
Multiply.(x - 5)(x + 2)
A. 2x2 + 10 B. x2 - 3x - 10 C. 2x - 10 D. x2 + 3x + 10