3 years ago

Does anyone know this?

1 answer:

8 0

Answer:

f(-9) = 279

Step-by-step explanation:

f(x) = 4x^2 + 7x + 18

f(-9) = 4(-9)^2 +7(-9) + 18

= 4(81) - 63 + 18

= 324 - 63 + 18

= 279

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