Afunction y(t) satisfies the differential equation dy dt = y4 − 9y3 + 20y2. (a) what are the constant solutions of the equation? (b) for what values of y is y increasing? (c) for what values of y is y decreasing?

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?