Question

given $f(x) = -x^2 + x + 15$, find $f(-8)$

Explanation:

Step1: Substitute x=-8 into f(x)

$f(-8) = -(-8)^2 + (-8) + 15$

Step2: Calculate each term

$-(-8)^2 = -64$, $+(-8) = -8$, so $-64 -8 +15$

Step3: Compute the result

$-64 -8 +15 = -45$

Answer:

-45