Select the correct answer. The table represents a proportional relationship.
The graph represents another proportional relationship.

Wich equation represents the lower unit rate of these two relationships?

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.

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.

Find y to the nearest hundreds place