Question

I will mark brainlist !!!!!!!!

Answer 1

Answer:

answer is B

Step-by-step explanation:

please I need brainlist

Answer 2

Answer:

f(n)=4*2^(n-1)

f(n)=a*b^n -> 2 is the multiplier for the outputs, so b=2. 4 is the output when n=1 (all answers are to the power of n-1), so a=4