4, 8, 16, 32, ... n is an integer, which of these functions generate the sequence?

see below

Step-by-step explanation:

4*2 = 8

8*2 = 16

16*2 = 32

We are multiplying by 2 each time

an = 4 ( 2) ^ ( n-1)

but 4 = 2*2

an = 2^2 * 2^ n-1

an = 2 ^ ( n+1)

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)