1.The fourth step in management science process is

2.A slack variable represents an excess above a constraint requirement level.

3.Slack and surplus variables can have only nonnegative values because negative resources are not possible.

4.The optimal solution of a minimization problem is at the extreme point closest to the origin

5.The College Coffee Cafe buys tea from three suppliers. The price per pound is $5 from supplier A, $10 from supplier B, and $40 from supplier C. They have budgeted $600 to purchase the tea. The cafe needs at least 30 pounds of tea. which of the following is describes the constraints for these conditions.