In graphical linear programming, when the objective function is parallel to one of the binding constraints, then: A the solution is sub-optimal B. multiple optimal solutions exist Ca single comer point solution exists D. no feasible solution exists E the constraint must be changed or eliminated

Please explain constraints for the solver and the total production and hiring and firing costs

1. A specific assignment of values to decision variables is called what? a. Constraint           b. Feasible           c. Solution           d. None of the above           2. Which of the following must be true of a feasible solution   a. All of what Solver calls changing variables must be greater than 0 b. It is optimal           c. It violates no constraints         d. None of the above

Problem 7-41 Southern Oil Company produces two grades of gasoline: regular and premium. The profit contributions are $0.30 per gallon for regular gasoline and $0.50 per gallon for premium gasoline. Each gallon of regular gasoline contains 0.3 gallons of grade A crude oil and each gallon of premium gasoline contains 0.6 gallons of grade A crude oil. For the next production period, Southern has 18,000 gallons of grade A crude oil available. The refinery used to produce the gasolines has a production capacity of 50,000 gallons for the next production period. Southern Oil's distributors have indicated that demand for the premium gasoline for the next production period will be at most 20,000 gallons. a. Formulate linear programming model that can be used to determine the number of gallons of regular gasoline and the number of gallons of premium gasoline that should be produced in order to maximize tota profit contribution. If required, round your answers to two decimal places. L Let R = P =…