Question

Ƒ(x) = −3x² – 20
Find f(-9)

Answer 1

f(-9) = -263

Explanation:

Hello!

To evaluate the function for f(-9), we simply replace -9 for x in the equation.

Evalute f(-9):

• 
  `f(x) = -3x^2 - 20`
• 
  `f(-9) = -3(-9)^2 - 20`
• 
  `f(-9) = -3(81) - 20`
• 
  `f(-9) = -243 - 20`
• 
  `f(-9) = -263`

The value of f(-9) is -263.