Two speed signs are 55mph and 50 km/h. Which sign allows for a faster speed

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Which table shows a proportional relationship between miles traveled and gas used?

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.