Which type of display would be the most appropriate to compare the sales of 2 different stores for a ten year period?

Sum is 17 and their difference is 3

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Which of the following graphs could represent a cubic function?