Elmo ate 29 cookies yesterday, which is 9 more than % of the total cookies he ate today. Write and solve an equation/inequality to find how many cookies Elmo ate today.

Which of these triangle pairs can be mapped to each other using two reflections?

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.

What is the ordered pair that represents the linear inequality y< 6x-4