The number of sides and number of angles is proportional, for it takes two sides to make an angle. So there are more sides.
Also a cube is not a polygon because a polygon is two dimensional and a cube is 3d.
I think the 3 is an exponent so we can write the expression as
18 * 4y^3
= 72y^3
I guess you mean . Since is in quadrant III, we expect . Then
Since is in quadrant I, we expect , so that
Now,
and
Work:
4r+14-r-6
^ ^
3r+14-6
^
8
Answer:
3r+8