Determine the coordinates of the vertex by completing the square.f(x) = 4x2 - 8x + 7
A. (1, 3)
B. (2, 15)
C. (-1, 19)
D. (-2, 39)
Answer: A
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The figure shows angle ? in standard position with its terminal side intersecting the unit circle. Evaluate sin ? and cos ?.
A. sin ? = 
, cos ? = - 
B. sin ? = 
, cos ? = - 
C. sin ? = - 
, cos ? = 
D. sin ? = - 
, cos ? = - 
Classify the system as either consistent or inconsistent.
A. Consistent B. Inconsistent
Find the unit vector having the same direction as v.v = -5i
A. i
B. - 
i
C. -j
D. -i
Find any x- or y-intercepts for the graph of the equation 
.
?
A. x-intercepts: (0, 12)y-intercepts: (2, 0), (6, 0) B. x-intercepts: (-2, 0), (-6, 0)y-intercepts: (0, 12) C. x-intercepts: (2, 0), (6, 0)y-intercepts: none D. x-intercepts: (0, 2), (0, 6)y-intercepts: (12, 0) E. x-intercepts: (2, 0), (6, 0)y-intercepts: (0, 12)