Question

use the following function rule to find f(-1).
f(x)=9 + x
f(-1)=

Explanation:

Step1: Substitute x = -1

Substitute $x=-1$ into $f(x)=9 + x$.
$f(-1)=9+(-1)$

Step2: Simplify the expression

$9+(-1)=9 - 1$
$9 - 1=8$

Answer:

8