Respuesta :

g(f(x)) means plug in f(x) for every "x" in g(x).

g(f(x))=(x+4)^2-1=x^2+8x+16-1=x^2+8x+15

answer: x^2+8x+15

Answer:

C. (g°f)(x)=x²+8x+15

Step-by-step explanation:

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