Please someone help it’s worth 35 points please help ?

What is best way to getting answer for my exam is

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?