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anonymous

  • one year ago

(FAN AND MEDAL) help please!!!

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  1. AaronAndyson
    • one year ago
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    Question?

  2. anonymous
    • one year ago
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    Ben shared his post with 2 friends. Each of those friends shares with 3 more every day, so the number of shares triples every day.Day Number of Shares 0 2 1 6 2 18

  3. anonymous
    • one year ago
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    1)Write an exponential function to represent the spread of Ben's social media post.

  4. anonymous
    • one year ago
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    i really need help on this question please help!!!

  5. anonymous
    • one year ago
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    @AaronAndyson

  6. anonymous
    • one year ago
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    @ganeshie8 @peachpi

  7. SolomonZelman
    • one year ago
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    This is a geometric sequence with r=3 and \(a_0\)=2. Or same way with an exponential function, you know the initial value of 2, and the base of the exponential function is 3.

  8. SolomonZelman
    • one year ago
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    \(y=a(b)^x\) a - initial value b - the growth rate

  9. Michele_Laino
    • one year ago
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    hint: from your data, we have: \[\Large \begin{gathered} N = 2 \times {3^0} = 2 \to day:0 \hfill \\ N = 2 \times {3^1} = 6 \to day:1 \hfill \\ N = 2 \times {3^2} = 18 \to day:2 \hfill \\ \end{gathered} \]

  10. anonymous
    • one year ago
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    whats the value of x in Y=a(b)

  11. anonymous
    • one year ago
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    @SolomonZelman ???

  12. SolomonZelman
    • one year ago
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    the x doesn't have a particular value in this case (it is a function, like any other, all you need to do is to fill in for a and b)

  13. anonymous
    • one year ago
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    so Y=6 exponent x

  14. SolomonZelman
    • one year ago
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    \(y=a(b)^x\) a - initial value (we said this initial value was .... ?) b - growth rate (this growht rate is... ? -what is the growht rate

  15. SolomonZelman
    • one year ago
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    no, don't multiply the 2 and 3

  16. anonymous
    • one year ago
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    ok sorry im confused

  17. SolomonZelman
    • one year ago
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    when you plugged in for a and b (into the y=a(b)\(^x\) ) (without multiplying anything, rather, just when you plugged) what did you get?

  18. anonymous
    • one year ago
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    y=2(3) exponent x

  19. SolomonZelman
    • one year ago
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    yes, y=2(3)\(^x\)

  20. SolomonZelman
    • one year ago
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    And that is the answer....

  21. anonymous
    • one year ago
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    lol thank you i thought i had to do more, can you help me with a few more questions

  22. SolomonZelman
    • one year ago
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    you can't multiply 2 and 3 together, because 3 is raised to exponent of x, and 2 is not. you get a wrong result, because 2(3)\(^x\) \(\ne\) 6\(^x\) for the following reason 2(3 • 3) \(\square \) 6 • 6 2(3 • 3 • 3) \(\square \) 6 • 6 • 6 2(3 • 3 • 3 • 3) \(\square \) 6 • 6 • 6 • 6 etc....

  23. SolomonZelman
    • one year ago
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    yes, I think I can.....

  24. SolomonZelman
    • one year ago
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    see how these two expressions are NOT equivalent?

  25. anonymous
    • one year ago
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    oooh ok i understand now..

  26. SolomonZelman
    • one year ago
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    Good:)

  27. SolomonZelman
    • one year ago
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    If you want you can ask in a different post, or use the same post. I don't really care....

  28. anonymous
    • one year ago
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    Carter shared his post with 10 friends, who each share with only 2 people each day. Write an exponential function to represent the spread of Carter's social media post.

  29. SolomonZelman
    • one year ago
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    Ok, we have the same exact thing, and a same exact function y=a(b)\(^x\) to fill out, EXCEPT that the numbers are bit different.

  30. SolomonZelman
    • one year ago
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    What number of friends who know the post did you start from?

  31. anonymous
    • one year ago
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    ok let me try

  32. SolomonZelman
    • one year ago
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    sure, go ahead

  33. anonymous
    • one year ago
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    y=10(2) exponent x

  34. SolomonZelman
    • one year ago
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    yes, very good

  35. SolomonZelman
    • one year ago
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    btw, jst giving you a tip, that you can write an exponent using a caret, the ^ key. (obtained by Shift+6) y=10(2)^x

  36. SolomonZelman
    • one year ago
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    ^x indicates that x is the exponent. 9so that you don't have to write that x is the exponent every time verbally.

  37. anonymous
    • one year ago
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    ok thanks, Graph each function using at least 3 points for each line. All graphs should be placed together on the same coordinate plane, so be sure to label each line.

  38. SolomonZelman
    • one year ago
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    oh, so now you have to graph the function from question 1, and the function 2.... right?

  39. anonymous
    • one year ago
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    yes

  40. SolomonZelman
    • one year ago
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    ok, |dw:1437324320071:dw|

  41. SolomonZelman
    • one year ago
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    idk, if this grid will make it easier, and if anything we can use desmos.com

  42. SolomonZelman
    • one year ago
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    ok, so your 1st function is y=2(3)^x and your second function is y=10(2)^x

  43. SolomonZelman
    • one year ago
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    I will recommend to use x=0 x=1 x=2 for the first and for the second function (use www.desmos.com/calculator because otherwise, you will have a hard time drawing it).

  44. SolomonZelman
    • one year ago
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    lets name your 1st function f(x), and second function g(x) (for our convience, for now)

  45. SolomonZelman
    • one year ago
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    f(x)=2(3)\(^x\) g(x)=10(2)\(^x\) you will need to tell me f(0), f(1), f(2) AND g(0), g(1), g(2)

  46. anonymous
    • one year ago
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    im confused, i really didn't understand the graphing at all

  47. anonymous
    • one year ago
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    @SolomonZelman

  48. SolomonZelman
    • one year ago
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    you just need to label a couple of points (at least 3) on the first function, graph them, and connect them with a curve to get (an approximate) graph of the function. Then, do the same thing for the second function

  49. SolomonZelman
    • one year ago
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    I am just advising you to use the points with x-coordinates of 0,1, and 2)

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