Determine the eccentricity, the type of conic, and the directrix.r = 
A. Eccentricity = 
; parabola; directrix x = - 
B. Eccentricity = 
; hyperbola; directrix x = 
C. Eccentricity = 
; parabola; directrix y = - 
D. Eccentricity = 
; ellipse; directrix x = - 
Answer: B
Mathematics
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Write a chain rule formula for the following derivative.
for u = f(x); x = g(p, q, r)
A. 
= 
B. 
= 
C. 
= 
+ 
+ 
D. 
= 
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Solve the equation.
+ 
= 
A. 4 , -1 B. -4, 1 C. 1 D. 4 , 1
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Find the exact value of the expression. Do not use a calculator.
, if ? = 45°
A. 
B. 12
C. 
D. 3
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Use the Binomial Theorem to expand the binomial and express the result in simplified form.(x + 4y)3
A. x3 + 12x2y + 48xy2 + 64y3 B. x3 + 4x2y + 8xy + 16xy2 + 32y2 + 64y3 C. x3 + 64y3 D. 3x + 12y
Mathematics