PLEASE HELP! This is due today The circle graph shows a breakdown of the students in Mrs. Milledge’s class based on where they were born. If 42 students were born in a state other than Texas, how many students does Mrs. Milledge have in all her classes?

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.