If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function?

What is the vertex of the absolute value function below?

Which graph represents y – 1 = 2(x – 2)?




If a(x) = 3x + 1 and , what is the domain of ?





Given , what is the average rate of change in f(x) over the interval [1, 5]?



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