A square parking lot has an area, what is the length of one side

Pls , the question is in the picture!

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.

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4