Lexie worked for 5 hours and 30 minutes. how should she write it on her time card? a. 5.25 b. 5.3 c. 5.5 d. 5.75

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Select the two pairs of figures that are similar.

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.