Respuesta :

nguyenviethoangbm9z

Answer:

A. 20

Step-by-step explanation:

  1. First we need find X.
  2. x = 7 (because we see question). f(g(7))
  3. Now we find g(x) = x - 3 => g(x) = 7 - 3
  4. Next we find f(x) = x² + x . We have f(4)
  5. f(4) = 4² + 4
  6. = 20