Question

Please help and thank you

Answer 1

Answer:

It's A.

Step-by-step explanation:

an = 4.2^n

When n = 1,  a1 = 4 . 2 = 8.

When n = 2,  a2 = 4 . 2^2 = 16

When n = 3,  a3 = 4 . 2^3 = 32

and a4 = 64.