Respuesta :

Answer:

3h

Step-by-step explanation:

f(a+h) = 3(a+h) + 1 = 3a + 3h + 1

f(a) = 3a + 1

f(a+h) - f(a) = 3a + 3h + 1 - 3a - 1 = 3h

Answer: 3h

3h

Yes it is correct
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