Which expression is equivalent to -3y^3+6y^2+6y?

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.

Using graph paper, determine the line described by the given point and slope. click to show the correct graph below.(0, 0) and 2/3

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units