Use the chain rule to find the indicated partial derivatives. n = p + q p + r , p = u + vw, q = v + uw, r = w + uv; ∂n ∂u , ∂n ∂v , ∂n ∂w when u = 8, v = 7, w = 2

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?