Need help i don't know it.

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

Can some one explain this i got sent this. is this a threat i’m scared

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?