Jenny is making jewelry for an arts and craft show she would like to make at least $100 in sales she estimates that this that she will sell at most 50 pieces of jewelry the bracelets that she is selling cost two dollars and the necklaces cost three dollars. what is the inequality?

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.