Simplify the expression.

A. csc2 ?
B. tan2 ?
C. cos ?
D. cot2 ?

Answer: D

Mathematics

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A.

B.

C.

D.

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Factor completely, or state that the trinomial is prime.5x4 + 10x3 - 75x2

A. (5x3 + 15x)(x - 5) B. 5x2(x - 3)(x + 5) C. 5x2(x + 3)(x - 5) D. prime

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Decide whether the ordered pair is a solution of the given system.(2, 7)y = x2 + 4x - 5y = 6x - 5

A. Yes B. No

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Find an equation of the parabola described.Focus at (0, -7); directrix the line y = 7

A. y2 = -28x B. y2 = -7x C. x2 = 28y D. x2 = -28y

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