(a) To find P(X = 2), substitute the given values into the formula. Do not simplify at this stage. 3 C2 · ,C5 9–3 C5–2 3Ci •,C5 9Cs-2 3C2 • 9-3 Cs-2 9C5 P (X = 2) = P (X = 2) = P (X = 2) = Formula 1 Formula 2 Formula 3 Choose the correct formula number from the table above: (b) Find P(X = 2). Write your answer as a fraction in the simplest form.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.