Question

if $f(x) = -3x + 8$, find $f(5)$.

Explanation:

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

$f(5) = -3(5) + 8$

Step2: Calculate multiplication first

$f(5) = -15 + 8$

Step3: Compute final sum

$f(5) = -7$

Answer:

$-7$