Simplify the radical expression. Assume all variables represent nonnegative real numbers.

A. 4x
B. 4xy2
C. 4x2
D. 4xy

Answer: A

Mathematics

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Approximate the square root to three decimal places.

A. 2.449 B. 2.454 C. 6.000 D. 2.446

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Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = ; g(x) = 3x + 6

A. (-?, ?) B. [0, ?) C. (-?, -2] ? [0, ?) D. [-2, ?)

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Mathematics

Write an equation to describe the variation. Use k for the constant of variation.w varies directly with a

A. a = 
B. a = kw
C. w = 
D. w = ka

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Use the quadratic formula to solve the quadratic equation. Approximate the solutions to the nearest tenth.4x2 + 5x - 2 = 0

A. 6.5, -7.7 B. 1.6, -0.3 C. 0.6, -3.1 D. 0.3, -1.6

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Mathematics