Given the function
[tex]f(x)=-3x^2-6[/tex]You have to find f(-9), to do so you have to replace the equation with x=-9 and calculate the value of f(x)
[tex]\begin{gathered} f(x)=-3x^2-6 \\ f(-9)=-3(-9)^2-6 \\ f(-9)=-3(81)-6 \\ f(-9)=237 \end{gathered}[/tex]When x=-9, the function has a value of 237