Question

algebra 1a - essentials (15997)
evaluating functions
if $f(x) = 5x + 40$, what is $f(x)$ when $x = -5$?
options: -8, 7, 15, -9

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