Given the function f(x) = 6(x+2) − 3, solve for the inverse function when x = 21.

−45

0

2

63

Question

Given the function f(x) = 6(x+2) − 3, solve for the inverse function when x = 21.

 −45

 0

 2

 63

hartnn · Answer

you just need to solve for x in
6(x+2) − 3 = 21

try ?

loser66 · Answer

@hartnn  have to find inverse function first.

hartnn · Answer

thats another way ...what i posted is a shortcut

hartnn · Answer

conventional way is to find the inverse function and then plug in x=21
with 
6(x+2) − 3 = 21
you'll get the same answer

loser66 · Answer

Wow.!!! very clever!! It's new to me but it's perfectly good. Thanks @hartnn

hartnn · Answer

welcome ^_^
lets see whether @jenniferjuice could get the value of x.

jenniferjuice · Answer

i dont get it do i plug in 21 for x?

hartnn · Answer

just solve for x in 
6(x+2) − 3 = 21

start by adding 3 on both sides

jenniferjuice · Answer

x=2 ?

hartnn · Answer

$\huge \checkmark $