Question

Consider the function f(x) = 8 − 3x2. Find the value of f(x) when x = 3 and select the correct answer below. -19 -10 26 35

Answer 1

F(x)=8-3x2
f(3)=8-3(3)2
8-27=-19

Answer 2

`f(x)=8-3x^2 \hbox{ when } x=3 \\ \Downarrow \\ f(3)=8-3 * 3^2=8-3 * 9=8-27=\boxed{-19}`

The answer is -19.