## LaynaMae 2 years ago Without any trolling . Can anyone help me figure this out ?

1. LaynaMae

2. skullpatrol

Any ideas?

3. LaynaMae

Don't I have to replace f(x) with y or something ..? :c

4. skullpatrol

You have to understand what f(x) means, which is?

5. LaynaMae

Function notation ?

6. skullpatrol

Yes...but what does it say about x?

7. LaynaMae

Replace it with -1

8. skullpatrol

Yes, in your question do it first with the function g(-1)

9. LaynaMae

Wait so what am I doing ..? I'm sorry I don't understand any of this ..

10. skullpatrol

Start first within the innermost parentheses of \$\$\huge f(g(x))\$\$ and work towards the outermost parentheses ...

11. LaynaMae

I know that much I just don't know how to solve it or work it out

12. skullpatrol

|dw:1378321409759:dw|

13. LaynaMae

I thought so . But I wasn't sure if -1 went in g(x) ..

14. skullpatrol

Now what?

15. LaynaMae

Do we work out f(x) ..?

16. skullpatrol

Yes.

17. LaynaMae

Replace "x" with -1 ?

18. skullpatrol

We use the result from g(-1) in f. That is what f(g(x)) means...

19. LaynaMae

Okay so 2 then .

20. LaynaMae

That would be 5 then

21. skullpatrol

f(x)=5x-10

22. LaynaMae

Yes , isn't the answer 5 ?

23. skullpatrol

How?

24. LaynaMae

|dw:1378321832200:dw|

25. skullpatrol

Excuse me? Are you trying to troll me with \$\$\huge5(2)=25\$\$

26. LaynaMae

No ?? I thought that's that you had to do .. Sorry ...

27. LaynaMae

what *

28. skullpatrol

|dw:1378322275977:dw|

29. LaynaMae

I already warned you that I didn't know how to do any of this .

30. LaynaMae

Ok I know .

31. skullpatrol

so what is 5*2=?

32. LaynaMae

25 I know . I understand that .

33. LaynaMae

I mean 10 sorry

34. skullpatrol

35. LaynaMae

Ok . It's 10

36. skullpatrol

37. LaynaMae

What ?

38. skullpatrol

|dw:1378322533506:dw|

39. LaynaMae

It's not worth correcting though , I already know the answer . So is 10 the answer to the entire question ?

40. LaynaMae

Or just for f(x)

41. skullpatrol

|dw:1378322646531:dw|

42. skullpatrol

f(g(x)) = 0 when x = -1

43. LaynaMae

Okay

44. LaynaMae

Okay thank you

45. skullpatrol

|dw:1378322937548:dw|

46. LaynaMae

47. skullpatrol

48. LaynaMae

Nevermind I'm just going to guess . I don't have enough time to work out all of these problems . Thanks for your help though .

49. skullpatrol

I can help if you want to learn :-)

50. skullpatrol

It is the same as the last one we did ...

51. skullpatrol

Just let x=15

52. LaynaMae

I do want to learn but I'm being timed . I'm taking a quiz . I don't have time to work out anything else ....

53. skullpatrol

start from the innermost function

54. LaynaMae

I tried working it out , is it 16 ? Yes or no :o

55. LaynaMae

Ugh .. That was my second choice -.-

56. skullpatrol

Go.od luck, come back and learn when you have time

57. LaynaMae

Okay