Q: In max 3x+2y (optimal (2,2), z=10), what is the shadow price of x+2y ≤ 6? Range? Dual optimal: u = 1/3, v = 4/3 (from earlier). Shadow price of first constraint: u = 1/3 (z rises 1/3 per unit RHS!). Allowable range: basis unchanged (compute from tableau). 100% rule: combined changes OK if sum of % ≤ 100%. (Sensitivity: what-if analysis!)