Rectangle with l = 4f ft, w = 1 ft (show work)

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

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.