Question

given ( f(x) = 3(8 - x) ), what is the value of ( f(-3) )?
a 33
b 15
c 9
d 21

Explanation:

Step1: Substitute $x=-3$ into $f(x)$

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

Step2: Simplify the inner expression

$8-(-3)=8+3=11$

Step3: Calculate the final value

$f(-3)=3\times11=33$

Answer:

A. 33