Human hair has an average diameter of about 0.000017 meters. Write this measurement in scientific notation

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.

50 points~ ! i have to turn this in tomarrow

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)