Question

I need help please??

Answer 1

C. -9

Step-by-step explanation

Given function:

`f(x)=x^2+x-9`

To find f(-1), plug in x = -1 into f(x)

`\begin{gathered} f(-1)=(-1)^2+(-1)-9 \\ f(-1)=1-1-9 \\ f(-1)=-9 \end{gathered}`