Henry is playing a new game app where he needs to navigate through a maze without touching the walls. Each player starts with 1,000 points and 5 points are deducted each time a wall is touched. What type of relationship most appropriately models this situation

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

What is the product? a-3/15a × 5/a-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.