Help immediately plz.
An empty lot is being converted into a park with a playground area. The shape of the playground area is shown. This area will be covered with recycled rubber band chips.

Installing the rubber chips costs $52.50 per square yard. How much will it cost to install the rubber chips

Is it greater than or less than7*3_9*2

To decrease an amount by 16% what single multiplier would you use

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.