On saturday, emily made 10 times as much as on monday. how much money did emily collect on monday?

Find the value of the cosine for angle a

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

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.