The answer is grow (i know you have an answer already. i just need points)
Number one is B hope this helps out :)
I would say that it hasn't increased 20% because 1. if the starting percentage was 18%, you would see a larger precentage but that isn't the case.
Answer:


Explanation:
Given


Required
Evaluate when 

Substitute 2 for x

Evaluate the expression in bracket

Remove bracket



Substitute 2 for x


