F(x) -Ax2 – 3x + 18 What is the value of the discriminant of f?
How many distinct real number zeros does f have?

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?