Answer: C) 2 dimensions; flat surface of length and width, but no depth
One way to think of a plane is to think of a flat sheet of paper that extends infinitely in all directions. The paper must be kept flat without any bends.
The average rate of change is 0.19
Answer to a1=6.8
a2= 0.5
mean is 6.78
i don’t know the rest sorry
I think (7,10)
I hope that I helped ;D