HELP ME PLEASE SOMEONE

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.

Sketch one cycle if the cosine function y=2cos2theta

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.