Respuesta :

dsouzaaww14

Answer:

405/2

Step-by-step explanation:

f(-9) = 3(-9)^2 + (3(-9))/2 + 3(-9)

f(-9) = 243 -27/2 -27

f(-9) = 405/2

(or)

f(-9) = 202.5

Hope this helps!

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