Simplify: negative two and one-third minus negative ten and one-sixth

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

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

What is the interquartile range of this day at set?