Souvenir hats,T-shirts and jackets are sold at a rock concert.Two hats,two T-shirts and one jacket cost $141.Three hats,three T-shirts and two jackets cost $239.One hat,three T-shirts and three jackets cost $362.Find the prices of the individual items.

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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.