## iheartfood 3 years ago question inside :) will be attached... same with answer choices :)

1. iheartfood

PROBLEM!!! :)

2. iheartfood

answer choices A,B,C,D from top to bottom :)

3. sirm3d

third from top

4. iheartfood

can u pls explain? :) and which one do u mean?? A,B,C,or D??

5. jim_thompson5910

the first 3 have something in common (look at the degrees of the denominator)

6. hartnn

know what domain is ?

7. iheartfood

idk really :( can y'all please exlapin?? :) and idk what they have in common :(

8. jim_thompson5910

they have exponents of ___

9. iheartfood

2?

10. jim_thompson5910

since they all involve subtraction, this means that that each of the first 3 have 2 vertical asymptotes

11. jim_thompson5910

but what's given is just one vertical asymptote

12. iheartfood

okay but what does that mean?

13. iheartfood

14. iheartfood

since the other 3 have 2 vertical asymptotes?

15. jim_thompson5910

it says that there is exactly 1 vert asymptote, but the first 3 have 2 vert asymptotes, so the first 3 must be ruled out because of this discrepancy

16. iheartfood

kk so my answer is D?? the one i attached??

17. jim_thompson5910

yes

18. hartnn

it may be possible that one of the 2 vertical asymptotes are given, its not written that ' there is exactly 1 vert asymptote'

19. iheartfood

okay thanks!! :) ahha :)

20. hartnn

plus domain does not contain -3 , but domain of 4th contains -3

21. jim_thompson5910

true, i guess the domain paints a more definitive picture

22. jim_thompson5910

oh didn't even see the +-...my bad lol

23. hartnn

so looking at the domain, which does not contain +3 or -3, the denominator will be x^2-9

24. iheartfood

25. hartnn

finally, yes!

26. iheartfood

haha kkk thanks :)

27. hartnn

haha kkk welcome :)

28. iheartfood

:)

29. sirm3d

i agree with @hartnn