Evaluate the function.If r(x) = , find r + r(-10).

A. - 
B. 15
C. - 
D. 12


Answer: A

Mathematics

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Solve the problem.The area of a triangle is 12x3 - 12x2 - 50x. Find a polynomial that expresses the length of the base if the height is x.

A. 24x3 - 24x2 - 100x B. 6x3 - 6x2 - 25x C. 24x2 - 24x - 100 D. 12x2 - 12x - 50

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Factor out the greatest common factor.20y4 + 14y3 - 20y2 - 2y

A. 2y2(10y2 + 7y - 10) B. 2y(10y3 + 7y2 + 10y - 1) C. 2(10y4 + 7y3 - 10y2 - y) D. 2y(10y3 + 7y2 - 10y - 1)

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Use special right triangles to evaluate the expression.cos 

A.
B.
C.
D.

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Solve the problem.Write an expression for the area of the figure shown. Then simplify the expression. All measures arein inches. 

A. 68 sq in.
B. 4 sq in.
C. 98 sq in.
D. 140 + 12 sq in.

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