Find the vertex of the parabola.f(x) = -2x2 + 3x + 1
A. 
B. 
C. 
D. 
Answer: A
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Answer the question(s) based on the following situation: For a population of 4000 students taking the SAT math exam, the scores on the exam have an approximately normal distribution with mean ? = 610 and standard deviation ? = 60.A score of 700 has an approximate standardized value of
A. 2. B. 1.5. C. -1.75. D. -1. E. none of these
Use the vectors v, u, w, and z to draw the indicated vector. 
v - w
A. 
B. 
C. 
D. 
Decide whether the graph of the equation opens up, down, to the left, or to the right; and whether it is wider, narrower, or the same shape as the graph of 
(or 
).x = 
y2 + 2y - 1
A. To the right; narrower B. To the left; wider C. To the right; wider D. To the left; narrower
Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary. 5x - y + z = 8 7x + y + z = 612x + 2z = 14
A. {(x, -x - 1, -6x + 7)} B. {(x, -x + 1, 6x + 7)} C. {(x, -x + 1, -6x + 7)} D. {(x, -x + 1, 6x - 7)}