Simplify.
A. 
B. 
C. 12x(x + 5)
D. 
Answer: D
Mathematics
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Find the requested composition or operation.f(x) = 
, g(x) = 8x - 9Find (f ? g)(x).
A. 2
B. 8
C. 2
D. 8
- 9
Mathematics
Find the vertex, focus, and directrix of the parabola.x2 = 16y
A. vertex: (0, 0)
focus: (0, 4)
directrix: y = -4
B. vertex: (0, 0)
focus: (-4, 0)
directrix: x = 4
C. vertex: (0, 0)
focus: (0, -4)
directrix: y = 4
D. vertex: (0, 0)
focus: (4, 0)
directrix: x = -4
Mathematics
Determine the area under the standard normal curve that lies between:z = 1 and z = 2
A. 0.0008 B. 0.1359 C. 0.0006 D. 0.8641
Mathematics
Find the slope of the line.
A. 5 B. -1 C. 1 D. -5
Mathematics