Answer:
option A and B are correct.
Step-by-step explanation:
Given: 
Option A: 
Option A is true,
Option B: 
Option B is also true.
Option C:

P(t + 1) ≠ 1.08 · P(t)
Option C is incorrect.
Option D: It is also incorrect, because according to option 2 earth's population will not grow exponentially without Bound.
85- (3.5*12)
* means times
I think this is correct.
Answer:
The first one is correct.
Step-by-step explanation:
I know a thing or two about a thing or two about powers of 10.