Iterations question please help

Answer:
option d
{ 4, 8 , 16 , 32 }
Step-by-step explanation:
Given in the question a function
f(x) = 2x
initial value[tex]x_{0}[/tex]=2
First iteration
f(2) = 2(2)
= 4
[tex]x_{1}=4[/tex]
Second iteration
f(4) = 2(4)
= 8
[tex]x_{2)=8[/tex]
Third iteration
f(8) = 2(8)
= 16
[tex]x_{3)=16[/tex]
fourth iteration
f(8) = 2(16)
= 32
[tex]x_{4}=32[/tex]