Make p the subject of the formula rp+5=3p+8r

Answer this question only if you know the 30 points and

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

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.