Can anyone please help me solve this? Thanks ​

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps