Question

Lori has determined a function f(x) that shows the exponential growth of the number of jeans Tim owns each year. Explain how the f−1(x) can be found and what f−1(250) means.

Answer 1

@triciaal

Answer 2

if the function tells you how many jeans given the year the inverse tells you the year given the number of jeans

Answer 3

@zepdrix

Answer 4

@AriPotta

Answer 5

@Hero

Answer 6

@triciaal

Answer 7

@kropot72 @TheSmartOne

Answer 8

@kelliegirl33

Answer 9

@sugarapples

Answer 10

@satellite73

Answer 11

Please help !

Answer 12

This is my last question

Answer 13

@adrynicoleb

Answer 14

@jim_thompson5910

Answer 15

x is the year
f(x) is the number of jeans sold in year x

Answer 16

normally you plug in a known year x to find the number of jeans sold

example: x = 2 ---> f(x) = f(2) = some number

Answer 17

you can take that idea in reverse and use the inverse function

\(\Large f^{-1}(250)\) will give you the year x when you sell 250 jeans

Answer 18

I want to use the inverse.

Answer 19

So what do I do next.?

Answer 20

you would need to know the actual function first

Answer 21

do they tell you what f(x) is?

Answer 22

To find an inverse, you switch around the variables in an equation. For example, if I had y=6x+2, and I wanted to find the inverse, I would make the equation x=6y+2, and then solve for y, ending up with an answer of y=(x-2)/6. That answer is the inverse equation, and to find the inverse of a value, like f-1(250), you just plug in 250 as the x-value. f(250) is the number of jeans tim owns at the 250th of whatever time interval is being used. An interval gives the opposite value of the original function, so the f-1(250) gives you the time when f(x)=250, aka when tim has 250 jeans. @jim_thompson5910

Answer 23

Can I put this as my answer

Answer 24

yes that looks good

Answer 25

Thanks :)