Solve the equation.3(x + 4) = (3x + 12)

A. {0}
B. {24}
C. all real numbers
D. no solution

Answer: C

Mathematics

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Write the formula using the "language" of variation. A = ?r2, where A is the area of a circle of radius r.

What will be an ideal response?

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The function f is one-to-one. Find its inverse.f(x) = x2 + 1, x ? 0

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

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 Match the function with its graph.f(x) = log x4

A.

B.

C.

D.

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Tell whether the statement is true or false.Some rational numbers are irrational.

A. True B. False

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Mathematics