You can first distribute the number into the parenthesis: 3n + 2 - 8n. Now, combine the like terms (n): -5n + 2. It can either be -5n + 2 or 2 - 5n.
You just need to find distance between two points
d=

d=6
- Surface Area of a Cube = 6(L)²
- Surface Area of this cube = 6(3.2)²
= 61.44 m²
Desmos helps me with graphing equations I reccomend using them.
Table C is a function, because none of the numbers in the X column repeat. (All the other ones do.):-)Hope I could help!!