04. (20 pts) Given the Excel Solver output: a) Give the mathematical model. Notel: There isn't any free variable (urs) in the primal model. b) Give the dual of the LP that you find in part (a). Note2: Don't multiply a constraint by -1 to change the sign of the constraint of the primal model before finding the dual. c) Pind shadow price values (highlighted in the Solver Output with yellow) using graphical solution technique. Answer Report Objective Cell (Min) Cell Name Original Value Final Value $E$20 0 2 Variable Cells Cell Name Original Value Final Value $B$19x1 0 0 $C$19x2 0 0 $D$19 X3 0 2 Integer Contin Contin Contin Constraints Cell Name $E$22 x1+x2+2x3 $E$23 2x1+x2 Cell Value 4 0 Formula Status $E$22>$G$22 Binding $E$23$G$22 Binding $E$23