Question

$f(x)=6x-12$
$f(6)=$ type your answer...
7 fill in the blank 1 point
$f(x)=\frac{x}{2}+4$
$f(8)=$ type your answer...
8 fill in the blank 1 point
$f(x)=\frac{x}{3}-1$
$f(-12)=$ type your answer...

Explanation:

Step1: Substitute $x=6$ into $f(x)$

$f(6)=6(6)-12$

Step2: Calculate the value

$f(6)=36-12=24$

Step3: Substitute $x=8$ into $f(x)$

$f(8)=\frac{8}{2}+4$

Step4: Calculate the value

$f(8)=4+4=8$

Step5: Substitute $x=-12$ into $f(x)$

$f(-12)=\frac{-12}{3}-1$

Step6: Calculate the value

$f(-12)=-4-1=-5$

Answer:

$f(6)=24$
$f(8)=8$
$f(-12)=-5$