Respuesta :

Answer:

C

Step-by-step explanation:

since f(x)= 2x+1 ,  then F(a+2) = 2 (a+2) + 1

everywhere you see x , you replace x with (a+2)

F(a+2) = 2(a+2) + 1

F(a+2) = 2a+ 4+ 1

F(a+2) = 2a+5

therefore the answer is C

^ they answered it already