Bill's car gets 30 miles to the gallon. for every gallon of gas it consumes, his car runs 30 miles. use this information to determine whether this relation is a function.

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.