3. find d(-6). *
anybody can me to understand this problem pls?

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

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Write as a product: ac^2–ad+c^3–cd–bc^2+bd