Helen rented a kayak at the lake. there is a charge of $8 as an initial fee and then $2 an hour for every hour that she uses the kayak. if the total charge is $20, how many hours did she kayak?

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.