anonymous
  • anonymous
(FAN AND MEDAL) help please!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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AaronAndyson
  • AaronAndyson
Question?
anonymous
  • anonymous
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
anonymous
  • anonymous
1)Write an exponential function to represent the spread of Ben's social media post.

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anonymous
  • anonymous
i really need help on this question please help!!!
anonymous
  • anonymous
@AaronAndyson
anonymous
  • anonymous
@ganeshie8 @peachpi
SolomonZelman
  • SolomonZelman
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.
SolomonZelman
  • SolomonZelman
\(y=a(b)^x\) a - initial value b - the growth rate
Michele_Laino
  • Michele_Laino
hint: from your data, we have: \[\Large \begin{gathered} N = 2 \times {3^0} = 2 \to day:0 \hfill \\ N = 2 \times {3^1} = 6 \to day:1 \hfill \\ N = 2 \times {3^2} = 18 \to day:2 \hfill \\ \end{gathered} \]
anonymous
  • anonymous
whats the value of x in Y=a(b)
anonymous
  • anonymous
@SolomonZelman ???
SolomonZelman
  • SolomonZelman
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)
anonymous
  • anonymous
so Y=6 exponent x
SolomonZelman
  • SolomonZelman
\(y=a(b)^x\) a - initial value (we said this initial value was .... ?) b - growth rate (this growht rate is... ? -what is the growht rate
SolomonZelman
  • SolomonZelman
no, don't multiply the 2 and 3
anonymous
  • anonymous
ok sorry im confused
SolomonZelman
  • SolomonZelman
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?
anonymous
  • anonymous
y=2(3) exponent x
SolomonZelman
  • SolomonZelman
yes, y=2(3)\(^x\)
SolomonZelman
  • SolomonZelman
And that is the answer....
anonymous
  • anonymous
lol thank you i thought i had to do more, can you help me with a few more questions
SolomonZelman
  • SolomonZelman
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....
SolomonZelman
  • SolomonZelman
yes, I think I can.....
SolomonZelman
  • SolomonZelman
see how these two expressions are NOT equivalent?
anonymous
  • anonymous
oooh ok i understand now..
SolomonZelman
  • SolomonZelman
Good:)
SolomonZelman
  • SolomonZelman
If you want you can ask in a different post, or use the same post. I don't really care....
anonymous
  • anonymous
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.
SolomonZelman
  • SolomonZelman
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.
SolomonZelman
  • SolomonZelman
What number of friends who know the post did you start from?
anonymous
  • anonymous
ok let me try
SolomonZelman
  • SolomonZelman
sure, go ahead
anonymous
  • anonymous
y=10(2) exponent x
SolomonZelman
  • SolomonZelman
yes, very good
SolomonZelman
  • SolomonZelman
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
SolomonZelman
  • SolomonZelman
^x indicates that x is the exponent. 9so that you don't have to write that x is the exponent every time verbally.
anonymous
  • anonymous
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.
SolomonZelman
  • SolomonZelman
oh, so now you have to graph the function from question 1, and the function 2.... right?
anonymous
  • anonymous
yes
SolomonZelman
  • SolomonZelman
ok, |dw:1437324320071:dw|
SolomonZelman
  • SolomonZelman
idk, if this grid will make it easier, and if anything we can use desmos.com
SolomonZelman
  • SolomonZelman
ok, so your 1st function is y=2(3)^x and your second function is y=10(2)^x
SolomonZelman
  • SolomonZelman
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).
SolomonZelman
  • SolomonZelman
lets name your 1st function f(x), and second function g(x) (for our convience, for now)
SolomonZelman
  • SolomonZelman
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)
anonymous
  • anonymous
im confused, i really didn't understand the graphing at all
anonymous
  • anonymous
@SolomonZelman
SolomonZelman
  • SolomonZelman
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
SolomonZelman
  • SolomonZelman
I am just advising you to use the points with x-coordinates of 0,1, and 2)

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