At the county fair, the operator of a game guesses a contestant's weight. For each pound the operator's guess differs from the contestant's weight, the contestant will receive $3. A contestant weighing x pounds received $15 when the operator guessed 120 pounds. Which of the following equations could be used to solve for the weight of the contestant? () А. 3lx — 15| В. 3х — 120| 3D 15 С. 15х — 120 — 3 D. 15 x – 3| = 120 = 120

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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.