The middletown zoo has 130 different exhibits. of those 130 exhibits 30%of the exhibits contain birds. how many exhibits contain birds

Adriano loves anime and collects toys from his favorite series.each month he gains 4 toys. if adriano has 3 toys when he starts collecting, how many does he have after 4 months

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.

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x