Respuesta :

Answer:

f(n) = -3n + 24

Step-by-step explanation:

-3n + 24

-3 x 1 = -3 + 24 = 21

-3 x 3 = -9 + 24 = 15

-3 x 6 = -18 + 24 = 6

-3 x 7 = -21 + 24 = 3

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