Multiply.(-80) ? 9

A. -640
B. 89
C. -720
D. -800

Answer: C

Mathematics

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Graph the pair of parametric equations with the aid of a graphing calculator.x = 4 tan t, y = 2 sec t; -?/2 ? t ? ?/2

A.

B.

C.

D.

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Find a rectangular equation for the plane curve defined by the parametric equations.x = t - 3, y = t2 + 5

A. y = x2 + 6x + 14 B. y = x2 - 6x - 14 C. y = x2 + 14 D. y = x2 - 14

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Simplify the expression.( + 5)( - 5)

A. 2
B. 32
C. 7 - 2
D. -18

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If possible, simplify the expression. If any variables exist, assume that they are positive. - 

A. -1 
B. - 
C. 0 
D. -6 

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