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1 1/8 + b ≥ 7/16

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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 statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?