Which of the following represents a valid constraint in linear programming? A) 2X ≥ 7Y B) (2X)(7Y) ≥ 500 C) 2X + 7Y² ≥100 D) 2X² + 7Y ≥ 50 E) All of these are valid linear programming constraints.

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A is a valid linear programming constraint because it is a linear inequality in the variables X and Y. B is not linear because it includes a product of X and Y. C and D are not valid because they include additional variables or constants not involved in the objective function.

Which of the Following Represents a Valid Constraint in Linear