The graph of the feasible region is shown. f = 8x + 4y y 2x + y = 40 8x+5y = 170 x+5y = 100 Find the corners of the feasible region. (Order your answers from smallest to largest x, then from smallest to largest y.) (x, y) = (x, y) = (x, y) = (x, y) = ( ( (x, y) = Find the maximum and minimum of the given objective function (if they exist). (If an answer does not exist, enter DNE.) maximum minimum f = f =