Algebra 2 Solving and Graphing Polynomials, math homework help

I submitted this assignment to someone else, and my teacher gave it 5.3/27. I talked to the person that did it and they wouldn’t help me. There is a total of three questions regarding solving and graphing polynomials. I included the assignment itself, the assignment that my teacher didn’t like so you can see what was wrong, and the rubric with the requirements and the feedback from the first one. I don’t want you to edit what the other person did, I just want you to see what my teacher didn’t like. All work must be 100% original.