Find the gcf of each !

14. 36xy3, 24y2

15. 18y2, 54y2

16. 80x3, 39yx2

17. 105x, 30yx, 75x

18, 140n, 140m2, 80m2

some are actually in the picture.

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

Nikolas calculated the volume of the prism. his work is shown below.

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?