Solve the inequality.(x + 4)(x - 1) > 0

A. (-?, -4) or (1, ?)
B. (-?, -4)
C. (-4, 1)
D. (1, ?)


Answer: A

Mathematics

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Write the set by listing its elements.The set of letters needed to spell these words: toot, tot, too, to.

A. {t, t, o, o} B. {t, o, o} C. {t, t, o} D. {t, o}

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Use the graph of f(x) = x - x5 and translations of graphs to sketch the graph of the equation. y = f(x) + 1

A.

B.

C.

D.

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For the following systems of equations in echelon form, tell how many solutions there are in nonnegative integers.x - 5y + 8z = 60  2y + 5z = 44

A. 7 B. 9 C. 6 D. 5

Mathematics

Find the vertex, focus, and directrix of the parabola with the given equation.(x - 2)2 = -20(y - 3)

A. vertex: (2, 3)   focus: (2, -2)   directrix: y = 8 B. vertex: (-2, -3)   focus: (-2, -8)   directrix: y = 2 C. vertex: (2, 3)   focus: (2, 8)   directrix: x = -2 D. vertex: (3, 2)   focus: (3, -3)   directrix: y = 7

Mathematics