Ican not figure out how to do this question and i need

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?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?