Pls I need help I will give a lot of coins if u answer all of them plsss

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

If there are 3.281 feet in 1 meter, how many inches are in one centimeter