The following figure shows the graphical solution of the next LP problem: Max Z = 3 x1 + 9x2 s.t X1 + 4x2 <8, X1+ x2 S 4, resource(A) resource (B) X1 2 0, x2 2 0 (2.007, La) (0, 2) (40) Adding 10 units to resource (B) is not advisable because

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