Asewer line slopes at 1/4" per foot. calculate the total fall in 30 feet

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

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.

3x = 729 solve for x plz . it's urgent. will mark