Respuesta :

MrsStrong

Answer:

B

Step-by-step explanation:

(g*f)(4) means to find g(f(4)). This is a composite which asks one equation to be substituted into another equation.

[tex]g(f(4)) = (4+5)^2\\g(f(4)) = 9^2\\g(f(4)) = 81[/tex]