Respuesta :

mhanifa

Answer:

  • -45

Step-by-step explanation:

Given

  • f (x) = -x² + 6x - 18

To find f (-3) substitute x with -3

  • f(-3) = -(-3)² + 6(-3) - 18 = - 9 - 18 - 18 = -45
  • f(-3) = -45
manissaha129

Step-by-step explanation:

[tex]f(x) = - {x}^{2} + 6x - 18 \\ f( - 3) = - {( - 3)}^{2} + 6( - 3) - 18 \\ = - 9 - 18 - 18 \\ = - 45[/tex]

-45 is the right answer.