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Damm [24]
3 years ago
9

F(x) = -x^2 + 5x + 15 Find f(9)

Mathematics
1 answer:
9966 [12]3 years ago
8 0

Answer:

f (9) = -21

Step-by-step explanation:

f (x) = -x^2 + 5x + 15

so, f (9) =

  • -(9×9) + (5×9) + 15
  • -81 + 45 + 15
  • -81 + 60
  • -21
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