Name the image of the point y after 90 degrees rotation clockwise about the origin (look at the picture)

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.

How do i simply this radical expression?