N^3 +4n^2 +8n -16
hope it help
mark me brainliest if i right ty

The 1st option because needed to flip the inequalities sign when multiplied by a negative.
Hope this helps. - M
You can use the distance formula.
The distance formula says the distance between two given points (x1, y1) and (x2, y2)
=

Your given points are (8, -1) and (-2, -1).
The distance will be

.
But you could have recognized that both points have the same y-coordinate of -1, which means change in distance is determined by change in x-coordinates only.
Change in x-coordinates is |-8 - 2| = 10. There is absolute value because distance cannot be negative.