Rationalize the denominator. Assume that all variables represent positive real numbers.

A. 5 
B.
C. 54
D.

Answer: B

Mathematics

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Graph the function using a solid line and its inverse using a dashed line on the same set of axes.f(x) = x2 + 3, x ? 0

A.

B.

C.

D.

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Mathematics

Solve.Madison, Lionel, and Steven enter a 51.4-mile bicycle team relay race. They complete the course in 2.27 hours. What was their average speed on the course? (Round to the nearest tenth.)

A. 2.3 mi/hr B. 0.0 mi/hr C. 22.6 mi/hr D. 0.4 mi/hr

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Mathematics

Combine and simplify, if possible.-3 + y

A. (-3x2y + xy4) or xy3(-3x + y2)
B. (-3x2y + xy3) or xy(-3x + y2)
C. (-3x2y + y3) or y2(-3x + y)
D. (-3xy + xy3) or xy2(-3 + y)

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Mathematics

Evaluate the sum.

A.
B.
C.
D.

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Mathematics