I WILL GIVE BRAINLIEST FOR RIGHT ANSWER PLEASE HELP This scatter plot shows hot drink sales and outside temperature above 0 °F. The equation represents the linear model for this data.

y=−12x+50

According to the model, how many hot drinks are sold when the temperature is 0 °F?

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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.