Are these triangles SSS congruent??

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

If you could answer these your a life saver

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?