Find the equation of the curve described by the given information.Parabola: focus 
, directrix: 
A. 
2 = -8
B. 
2 = -8
C. 
2 = 8
D. 
2 = 8
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Give the amplitude or period as requested.Period of f(x) = 4 cos(13?x + 3)
A. 
B. 
C. 13?
D. 4
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Find dy.y = sin(3x2)
A. -6 cos(3x2) dx B. -6x cos(3x2) dx C. 6x cos(3x2) dx D. 6 cos(3x2) dx
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Calculate the area of the region bounded by the graphs of the given equations.y = x3, y = 4x
A. 4 B. 8 C. 16 D. 2
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