Four times a number plus five more than three times the number is 47

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

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.

The area of a circle is equal to 1 dm². find the radius of the circle.