Answer:
[tex]4(2)^{n-1}[/tex]
Step-by-step explanation:
this is a geometric sequence and to get each next number you multiply by two so [tex]a(b)^{n-1}[/tex] becomes put 2 in for b and you get [tex]a(2)^{n-1}[/tex].You can put 4 in for a because its the first number of the sequence. [tex]4(2)^{n-1}[/tex]