You suspect that there is a relationship between the student marks and the amount of time they spend on social media.

a) write a hypothesis that relates these variable.

b) write the opposite hypothesis with respect to this relationship.

Which linear inequality is represented by the graph? !

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)