Evaluate the expression for the value of x = -1.
?
2x - 5
?
A. -2
B. 7
C. -8
D. -7
E. 2
Answer: D
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Find the vertex, focus, and directrix of the parabola with the given equation.(y - 4)2 = 12(x + 2)
A. vertex: (4, -2) focus: (7, -2) directrix: x = 1 B. vertex: (2, -4) focus: (5, -4) directrix: x = -1 C. vertex: (-2, 4) focus: (1, 4) directrix: x = -5 D. vertex: (-2, 4) focus: (-5, 4) directrix: x = 1
Provide an appropriate response.
=
A. 
B. 
C. 
D. 
E. 
For the given functions f and g, find the requested function and state its domain.f(x) = 8x - 9; g(x) = 2x - 3Find f - g.
A. (f - g)(x) = 6x - 6; (-?, ?)
B. (f - g)(x) = 6x - 12; 
or 
C. (f - g)(x) = -6x + 6; (-?, ?)
D. (f - g)(x) = 10x - 12; 
or 
State the domain of the given function.f(x) = 5x2 + 9x - 7
A. all whole numbers B. (-?, ?) C. all real numbers except 0 D. (0, ?)