Question

if $f(x) = 5x + 40$, what is $f(x)$ when $x = -5$?
$\circ$ $-9$
$\circ$ $-8$
$\circ$ $7$
$\circ$ $15$

Explanation:

Step1: Substitute x = -5 into f(x)

$f(-5) = 5(-5) + 40$

Step2: Calculate the product term

$5(-5) = -25$

Step3: Compute the final sum

$f(-5) = -25 + 40 = 15$

Answer:

15