the graph shows a residual plot of values from a line of regression. use the plot to analyze the result of the correlation

Question and answers are in the attached picture. you so much in advance.

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 value of f(x) = 2.2 for f(-2)?