What is the correct answer?

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. 3(4+4x) (type your answer in with no spaces)

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?