Incorrect Question 1
0 / 10 pts
Mrs. Taylor bought a water tube to pull behind her boat. The tube cost $87 and
9% tax was added at checkout. Mrs. Taylor gave the cashier$100. How much
change should she have recieved?

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.