Respuesta :

mumsy

Answer: -83

Step-by-step explanation:

f(9)--22+20-9*(9)=-2-81=-83

You gotta replace the x for 9 so...
F(9)= -22 -9(9) + 20
F(9)= -22 -81 +20
F(9)= -22 - 61
F(9)= -83