Find the axis of symmetry of the given function.f(x) = 5 - 2x2 + 9x

A. x = 
B. x = - 
C. x = - 
D. x = 

Answer: D

Mathematics

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Solve the inequality . Restrict your attention to positive values of . Round your answer to two decimal places.  ?

A.
B. ? and
C. ? and
D. ?

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Mathematics

Solve the problem.If f varies jointly as q2 and h, and f = -24 when q = 2 and h = 2, find f when q = 4 and h = 3.

A. f = -48 B. f = -144 C. f = -9 D. f = -36

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Mathematics

Find the unknown length x for the given similar triangles. 

A. x = 18 B. x = 180 C. x = 0.8 D. x = 8

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Mathematics

Graph the system of inequalities, and find the coordinates of the vertices.y - 3x ? 9,y + 3x ? -3,x ? 0,y ? 0

A.

B.

C.

D.

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Mathematics