Question

Given f(x) = 3x-1/ 2 the quantity of 3x minus 1, divided by 2, solve for f-1(4).

1 please help medal

3

5

7

Answer 1

Though of course, it can't hurt to try this one more time ^_^

\[\Large f(x) = \frac{3x - 1}{2}\]

Answer 2

For now, it might be useful to find what's called the INVERSE of the function f.
Do you know this term, inverse?

Answer 3

kind of

Answer 4

btw i have to go in 3 min sry

Answer 5

so trying to rush this

Answer 6

I see. Then chop chop.
There's a shortcut, in that case.

Answer 7

ok

Answer 8

In plain English, you're actually being asked what value of x would yield a function value of 4.

So, in that case, simply replace f(x) with 4, and then solve for x.
\[\Large 4 = \frac{3x-1}{2}\]
Hop to it.

Answer 9

so plug in 4 for x

Answer 10

No... plug 4 in for f(x), as I did, and then SOLVE for x.

Answer 11

ok

Answer 12

Go. The answer you get for x will be the answer to this question, it shouldn't take more than a minute. Hop to it :)

Answer 13

im trying one sec

Answer 14

not everyone as smart as you sadly :(

Answer 15

Don't be silly... we're all smart~ just not equally wiling to admit it. Now...
If you're really desperate and rushing, then just replace the x in
\[\Large \frac{3x-1}{2}\] with 1,3,5, and 7 and see which one gives you a value of 4.

Answer 16

3

Answer 17

That is correct.
Good job ^_^

Answer 18

thx

Answer 19

have nice day