Of the 200 students in school 90 volunteered to work the book sale. what percent of students volunteered?

With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2