On Saturday's lunch rush at Ada's diner, they sold 268 sandwiches.  Of those sandwiches sold: 68 sandwiches included turkey 50 sandwiches included cheese 34 sandwiches included sprouts 21 sandwiches included both turkey and cheese 7 sandwiches included turkey and sprouts 6 sandwiches included both cheese and sprouts 5 sandwiches included all three ingredients How many sandwiches did not include any of these ingredients?

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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.