Question

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

−45

0

2

63

Answer 1

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

try ?

Answer 2

@hartnn have to find inverse function first.

Answer 3

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

Answer 4

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

Answer 5

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

Answer 6

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

Answer 7

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

Answer 8

just solve for x in
6(x+2) − 3 = 21

start by adding 3 on both sides

Answer 9

x=2 ?

Answer 10

\(\huge \checkmark \)