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Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

Explain why the factor 1.5 is broke. into two numbers in the model.

What is x3+3x2−16x−48 divided by x−1?