Respuesta :

f(x) = (3+x)/(x-3)

f(a+2) = (3+a+2)/(a+2-3) ... replace every x with a+2

f(a+2) = (a+3+2)/(a+2-3)

f(a+2) = (a+5)/(a-1)

f(a+2) = (5+a)/(a-1)

The answer is choice A

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