Solve the following model using linear programming Callow for continuous values) and determine the values of the decision variables and objective function. Then, round the decision variables values down to the nearest Integer and determine the value of the decision variables and objective function, this is an approximate answer to solving the model using integer programming. Observe if the rounding provides a feasible solution all constraints are satisfied. Finally, solve the model using integer programming and determine the values of the decision variables and the objective function using integer constraints. Observe the differences in the answers using the three methods. Maximize Z2x1 6x2 + 3x3 subject to 1x1 + 1x2 + 1x3 3 6 -2x1 + 1x2 +-1X3 5-7 - 1x1 + -1X2 + 1x351 x1, x2, x320 LP Method X1 X2 - X3 Round Down Method X1 IP Method X2 X3 ZA