Respuesta :

MissSpanish

So we replace "x" with the necessary value (3):

[tex]f(3) \: = \: 2 \: \times \: 3[/tex]

[tex]f(3) \: = \: \boxed{ \bold{6}}[/tex]

Answer:

[tex]\text{Opción A. } \boxed{ \bold{55}}[/tex]

MissSpanish