Respuesta :

Answer:

1/4

Step-by-step explanation:

f(x) = 2 * (1/2) ^x

Let x=3

f(3) = 2 * (1/2) ^3

     = 2 * ( 1/2) * 1/2) * (1/2)

     = 2 * 1/8

    = 2/8

    = 1/4