Can someone factor this: 15x (squared) + 5x - 50

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Are the corresponding angles congruent? explain why or why not.

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?