Respuesta :

f(9) = (3)(2)
= 6

mark as brainliest if it’s helpful

Answer:  [tex]\quad F=6[/tex]

Step-by-step explanation:

[tex]F=\left(-6+9\right)\cdot \:2[/tex]

[tex]F=3\cdot \:2[/tex]

[tex]F=6[/tex]