Respuesta :

we have the geometric sequence

[tex]a_n=12\cdot(3)^{(n-1)}[/tex]

that means

For n=1

an=12

For n=0

an=4

therefore

the function must to be

f(x)=4 (3^x)

because

For x=0 ------> f(x)=4

For x=1 ------> f(x)=12

answer is the option C