Solve and graph.x2 - 11x + 28 > 0
A. x < 4
B. x > 7
C. x < 4 or x > 7
D. 4 < x < 7
Answer: C
Mathematics
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Evaluate using substitution.
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Find the coordinates of the vertex of the parabola.y = x2 - 2
A. (0, -2) B. (0, 2) C. (-2, 0) D. (2, 0)
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Write the number as a product of a real number and i. Simplify the radical expression.
A. -4i
B. 4
C. 4i
D. -4
Mathematics