## anonymous one year ago A wrestling match has eliminations each round. The table below shows the number of wrestlers in each of the first 4 rounds of the tournament: Round (x) 1 2 3 4 Wrestlers f(x) 64 32 18 9 Compute the average rate of change of f(x) from x = 1 to x = 4 and identify the meaning of that rate. A)55; there were 55 fewer wrestlers between rounds 1 and 4 B)3; there were 3 rounds between rounds 1 and 4 C)negative fifty five over three; on average, there were 55 fewer players for every 3 rounds D)negative three over fifty five; on average, there were 3 fewer players for every 55 rounds

1. anonymous

@muscrat123 HEY CAN YOU HELP ME PLEASE

2. anonymous

@campbell_st

3. anonymous

WHY DO U KEEP TAGGING ME AFTER I SAY I DONT KNOW HOW TO ANSWER THE QUESTION????

4. anonymous

i sorry i dont see you comment

5. anonymous

if im not sure, I WILL NOT ANSWER. i dont want to give anybody an incorrect answer

6. anonymous

i recommend @horsegirl27 @dan815 @jim_thompson5910 @misssunshinexxoxo @campbell_st and @nerlineg

7. campbell_st

average rate of change is the slope of the line use the points (1, 64) and (4, 9)

8. anonymous

yup campbell is right

9. anonymous

yea so what i need to do next?

10. campbell_st

so what did you get as the slope...?

11. anonymous

(1*64)(4*9)= 2304? is right?

12. anonymous

i'm not good at math :(

13. campbell_st

slope = (change in y)/(change in x) sometimes referred to as slope = rise/run

14. anonymous

slope is x2-x1/ y2-y1

15. campbell_st

so the points need to match for x and y slope = (64 - 9)/(1 - 4) what do you get

16. anonymous

-18.3

17. anonymous

?

18. campbell_st

so for your question its avg change = (change in wrestlers)/(change in rounds)

19. campbell_st

well why not leave it as a fraction.... seeing some of the answer choices are fractions

20. anonymous

you have two points plug the x valule with the x vaule and y value with y

21. campbell_st

so as an improper fraction.. what do you thing the avg change of slope would be..?

22. anonymous

i dont know :(

23. anonymous

@campbell_st ???

24. anonymous

are you there?

25. anonymous

please i really need help on this

26. campbell_st

well you had a decimal value avg change = (change in wrestlers)/(change in rounds) = (64 - 9)/(1 - 4)

27. anonymous

=-18.3?

28. campbell_st

can you give the answer as in improper fraction

29. anonymous

how? i dont know how

30. campbell_st

what number is the change in wrestlers what number is the change in rounds...?

31. anonymous

Round (x) 1 2 3 4 Wrestlers f(x) 64 32 18 9

32. campbell_st

change in wrestlers 64 - 9 = avg change = ------------------------------------ -------------- change in rounds 1- 4 = what do you think the missing numbers in the fraction are..?

33. anonymous

-55/ 3

34. anonymous

wrestlers= 55 rounds= -3

35. campbell_st

great so you are looking at choices C or D so read the choices and decide which should be your answer

36. anonymous

-55/-3= 18.3

37. anonymous

D?

38. campbell_st

but your answer choices don't contain a decimal... that's why I asked you to write it as an improper fraction.

39. campbell_st

so you are saying the avg change is $avg ~change = \frac{-3}{55}$ is that the same as you answer above $Avg~ change = \frac{-55}{3}$

40. anonymous

YES

41. campbell_st

well I Think you should choose C the avg change = -55/3

42. anonymous

Yea, thank you so much! can you help me with one more?

43. anonymous

Which of the following options is an equivalent function to f(x) = 3(2)3x? f(x) = 3(8)x f(x) = 24x f(x) = 27(8)x f(x) = 3(8x)

44. anonymous

@Campbell_st

45. anonymous

@nerlineg

46. anonymous

make another post for that answer AND DONT FORGET TO TAG ME :)