Question

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

Answer 1

i have no idea what this means, but it could mean find \(f^{-1}(21)\)

Answer 2

in which case, solve
\[6(x+2)^2-3=21\] for \(x\)

Answer 3

ohk

Answer 4

@preddie1234, have you found \(f^{-1}(21)\) yet?

Answer 5

no im trying to

Answer 6

What have you done so far?

Answer 7

add the things together

Answer 8

Add what together?

Answer 9

the equation

Answer 10

How does doing that help you find the inverse? Show the work you have done so far.

Answer 11

it dont look right

Answer 12

So you have
f(x) = 6(x+2) − 3

Change f(x) to y first.

Answer 13

oh k so that will be y=6x+12-3

Answer 14

Now swap x and y

Answer 15

oh what next

Answer 16

Did you swap x and y already?

Answer 17

yes

Answer 18

How did you get 6(x+2)^2−3=21? @satellite73

Answer 19

@preddie1234, what did you get after swapping x and y?

Answer 20

In case you haven't noticed, I'm interested in seeing the work you do as you are doing it.

Answer 21

plz see my attachment

Answer 22

@shamim, no offense, but that's barely readable. Furthermore, you should be trying to guide the user rather than post everything all at once.