Find the length of the missing in the following examples.​

Which of the greatest common gcf of 32 and 48 a 16 b 96 c 8 d 32

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

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