3. [-/4 Points] DETAILS WANEFMAC7 6.2.011. MY NOTES PRACTICE ANOTHER Solve the LP problem. If no optimal solution exists, indicate whether the feasible region is empty or the objective function is unbounded. HINT [See Example 1.] (Enter EMPTY if the region is empty. Enter UNBOUNDED if the function is unbounded.) Maximize and minimize p = x + 2y subject to x+y 28 x+y