Top question please answer 10points

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 expression and diagram represent “renee biked four times as far this month as last month”?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.