Evaluate.8x2 + 9x for x = 4

A. 68
B. 164
C. 92
D. 100

Answer: B

Mathematics

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For the given function f(x), find f-1(x). State the domain of f-1(x).f(x) = 

A. f-1(x) = , x ? 0
B. f-1(x) = , x ? 0
C. f-1(x) =  - 5, x ? 0
D. f-1(x) = , x ? 0

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Mathematics

Find an equation that meets the given conditions.y varies directly as x and y = 5 when x = 

A. y = x
B. y = x + 
C. y = 15x
D. y = x

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Mathematics

Factor.9x2 - 6x + 1

A. (3x - 1)2 B. (3x + 1)(3x - 1) C. (3x + 1)2 D. prime

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Mathematics

Solve the quadratic equation and express all nonreal complex solutions in terms of i.x2 + 80 = 0

A. {±4i}
B. {±i}
C. {±20i}
D. {±4i}

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Mathematics