Answer
$f(x) = 27$
Work Step by Step
To find the value of $f(x)$, we plug in $-3$ for $x$:
$f(x) = (-3)^2 - 4(-3) + 6$
Evaluate the exponent first, according to order of operations:
$f(x) = 9 - 4(-3) + 6$
Then, we multiply:
$f(x) = 9 + 12 + 6$
Now, we add or subtract from left to right:
$f(x) = 21 + 6$
Add one more time:
$f(x) = 27$