Respuesta :

altavistard

Answer:

(g - f)(x) = 3x - 33

Step-by-step explanation:

Arrange f(x)= 2x + 13 and g(x) = 5x -20 vertically as shown below:

 g(x) = 5x - 20

-f(x) = -2x - 13

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(g - f)(x) = 3x - 33