Answer:
Option C is correct.
Step-by-step explanation:
Points given are
(1,2) and (3,8)
The formula used for slope is:

x₁ = 1, x₂=3, y₁=2 and y₂=8

So, slope =3
Option C is correct.
Answer:
5x^2-x
Step-by-step explanation:
pls mark as brainliest
Answer:
x=45/2
Step-by-step explanation:
2x-6=39
2x=39+6
2x=45
x=45/2