What number increased by 11.8% equals 185

Use the graph of the sine function y=2sinθ shown below

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

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.