Phebe one year ago ALLITLE HELP HERE

1. Phebe

im going to post attachment

2. Phebe

3. Phebe

there it is ^^^^

4. anonymous

what do you think the pattern is?

5. Phebe

for which question A. B. or C.

6. anonymous

for the table. you need the pattern to do them all.

7. Phebe

well i think the pattern is going by 4 right?

8. anonymous

9. Phebe

i think 12

10. anonymous

Each line is adding 2 times the last number added, so when x = 5 y = 1 + 2 + 4 + 8 + 16

11. anonymous

because 2*8 = 16

12. Phebe

OMG!! THATS TRUEE I WAS ADDING THE WHOLE TIME THAS Y I GOT IT WRONG

13. Phebe

THANK YOU!!

14. anonymous

you're welcome. you got if from here?

15. Phebe

Yep i do Well Can you help me with the B part?

16. anonymous

ok. the first thing you want to do is turn those sums into numbers like this |dw:1434049238139:dw|

17. Phebe

ok

18. anonymous

from there if you know your exponents you should see the pattern. |dw:1434049509172:dw| Your y-values are 1 less than 2^x

19. Phebe

OH yea truee

20. Phebe

thanks!

21. anonymous

you're welcome

22. Phebe

Do you mind helping me with C?

23. Phebe

@peachpi

24. anonymous

ok. how would you write the equation from the pattern we found in b?

25. Phebe

im not shure

26. anonymous

We have in the third column and expression for x. The second column is y. What's the relationship between numbers in the 2nd and 3rd columns?

27. Phebe

i actually dont see a relatipnship between them at all

28. anonymous

subtract the numbers in the 3rd from those in the 2nd and tell me what you get?

29. Phebe

OK

30. Phebe

2-1=1 3-4=1 7-8=1 15-16=1

31. anonymous

those should be -1.

32. Phebe

ok

33. anonymous

so if you subtract 1 from 2^x you get y

34. Phebe

Yes

35. Phebe

36. Phebe

????????????????????????

37. anonymous

yes

38. Phebe

OH WELL THANK YOU!!!

39. anonymous

yw