Identify the vertex of the parabola.y = 2x2 + 4x - 1
A. (-3, -1)
B. (3, 1)
C. (-1, -3)
D. (1, 3)
Answer: C
Mathematics
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Find the surface area of the surface S.S is the portion of the surface 
that lies above the rectangle 
and 
in the x-y plane.
A. 24[40 + ln 9]
B. 16[40 + ln 9]
C. 8[40 + ln 9]
D. 
[40 + ln 9]
Mathematics
Factor by grouping.xy + 12x - 4y - 48
A. (y - 12)(x + 4) B. (x - 12)(y + 4) C. (x + 12)(y - 4) D. (y + 12)(x - 4)
Mathematics
Identify the figure as a line, a ray, a line segment, or an angle. Then name the figure using the given points.
A. line segment; 
B. 
C. line; 
D. angle; ?CA
Mathematics
Evaluate the given function.f(x) = 16log2(3x), f
A. -3.58 B. -57.4 C. -2 D. -32
Mathematics