## itsmichelle29 one year ago Which of the following statements have the same result? Explain each step in solving each one. I.f(2) when f(x) = 3x + 2 II.f-1(3) when f(x) = 2 x minus 7, all over 3 III.2y + 14 = 4y - 2

1. freckles

did you replace x with 2 for I?

2. freckles

in II how you have to do is replace f(x) with 3 and solve for x. III. you solve for y.

3. itsmichelle29

so I is 8

4. itsmichelle29

@freckles

5. itsmichelle29

and II. i get -1/3 is that correct

6. freckles

let see 3(2)+2 is 6+2 which is 8 so yes for I

7. freckles

$3=\frac{2x-7}{3}$ I think this is what you have above?

8. freckles

and I asked you to replace f(x) with 3 since we want to find f^(-1)(3)

9. freckles

hmm solving that shouldn't give -1/3

10. itsmichelle29

11. itsmichelle29

@freckles

12. freckles

did you try solving the equation I have above?

13. freckles

what is 3(3)?

14. freckles

$3=\frac{2x-7}{3} \\ 3(3)=2x-7$

15. freckles

and I will give you another hint add 7 on both sides

16. itsmichelle29

so its 8

17. itsmichelle29

so they all have the same result

18. freckles

it seems so :)