Solve the inequality.x2 + 9x + 18 > 0
A. (-6, -3)
B. (-?, -6)
C. (-3, ?)
D. (-?, -6) or (-3, ?)
Answer: D
Mathematics
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Simplify.(9x8y4)2
A. 9x16y8 B. 81x16y8 C. 9x10y6 D. 18x8y4
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Use transformations of the graphs of y = x2 or y = |x| to sketch a graph of f by hand.f(x) = -4(x + 3)2 + 1 
A. 
B. 
C. 
D. 
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Find the value of k so that the equation will have exactly one rational solution.4x2 + kx + 9 = 0
A. 12 or -12 B. 6 or -6 C. 12i or -12i D. None
Mathematics