can someone help me please? I will fan and medal.

- anonymous

can someone help me please? I will fan and medal.

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- anonymous

Three Algebra 1 students are comparing how fast their social media posts have spread. Their results are shown in the following table.
Description Amber shared her photo with 3 people. They continued to share it, so the number of shares increases every day as shown by the function. 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. Carter shared his post with 10 friends, who each share with only 2 people each day.
Social Media Post Shares f(x) = 3(4)x
Day
Number of Shares
0 2
1 6
2 18
Carter shared his post with 10 friends, who each share with only 2 people each day.

- anonymous

hey @phi

- anonymous

can ya'll help me please I really really need it.

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## More answers

- anonymous

i relly dont know how to solve this problem thats why im trying to get help

- anonymous

oh sorry for not putting the question I need help on, hold on please.

- anonymous

@ganeshie8

- anonymous

3.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

- anonymous

if you need me to post the ones I already did to help out I will.

- anonymous

@ganeshie8

- anonymous

@raiders88

- anonymous

can you help me?

- raiders88

nope sorry mate

- raiders88

but here

- anonymous

thank you.

- anonymous

@phi please help if you can. I will post the others that I already did to help you out.

- anonymous

@phi do you need me to post the others?

- phi

what is the first question?

- anonymous

1.Write an exponential function to represent the spread of Ben's social media post.
Ben, f(x)=2*(3)x.

- anonymous

I just need help on #3

- phi

you mean this:
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
?

- anonymous

yes please.

- phi

one of the functions is given by a table, right ?

- anonymous

I think so.

- phi

it is hard to read the post. what are the 3 equations for A , B and C ?
(I'm using their first initial, easier to type)

- anonymous

A, f(x)=3*(4)^x
B, f(x)=2*(3)x
C, f(x)=10*(2)^x

- phi

is B f(x)=2*3^x ?

- anonymous

no.

- anonymous

@phi

- phi

you don't mean B is f(x)= 2*3*x = 6x ?
I assume you mean
\[ f(x) = 2 \cdot 3^x \] ?

- anonymous

its not an exponential function, my teacher would have told me to correct that if it was.

- phi

ok, so B is f(x)= 6x

- phi

to plot we need points
pick x=0, 1,2
and find f(x)
if we have f(x)= 6x
what is f(0) ? f(1) ? f(2) ?

- anonymous

idk.

- anonymous

how would I make the points from this?

- anonymous

https://www.desmos.com/calculator/muzmwjjxcu

- phi

ok. But first,
***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. ***
that says the first day 2 people have his post
the next , 2*3 = 6
the next, 6*3 = 18
if we make that into an equation , it is
\[ f(x) = 2 \cdot 3^x\]
and we start at x=0
I am saying that equation for B must be exponential

- anonymous

idk, my teacher didn't say anything about it and I don't want him coming back on more if I change it and its wrong you know?

- anonymous

what are the 3 points for each line?

- phi

let's do the first equation
f(x)=3*(4)^x
for x=0, 1, 2
when x is 0 you have 3* 4^0
4^0 is 1 (anything to the zero power is 1)
so we have 3*1 = 3
and one point is (0,3)
can you find the "y value" when x is 1 ?

- phi

you have 3*(4)^x
erase the x and write in 1 in its place
3*(4)^1
now do order of operations: exponents first. what is 4^1 ?

- anonymous

4

- anonymous

@peachpi

- phi

ok, so you now have 3*4 = 12
so far we have
(0,3)
(1,12)
what do you get for x=2 ?

- anonymous

9

- phi

you have 3*(4)^x
erase the x and write in 2 in its place

- phi

just do this: erase the x and write in 2 in its place
what do you have ?

- anonymous

you have 9

- anonymous

3^2=9

- phi

yes 3*3 is 9
but the formula for A is 3*4^x
that is different from 3^x
so far we found (0,3), (1,12), and now we want (2, ??)
to find the number we erase the x and put in 2 in
\[ 3 \cdot 4^x \]
can you erase the x and write in 2 instead ?

- anonymous

sorry wrong way 4^2=16

- phi

ok, but do the entire formula
3* 4^2 = what ?

- anonymous

I looked at it wrong.

- anonymous

48

- phi

ok, so the 3rd point is (2,48)
(0,3), (1,12), (2,48)
time to plot these. do you know how to plot (0,3) ?

- phi

do you use paper or a computer to plot points ?

- anonymous

computer.

- anonymous

how would I do it the easy way on computer?

- phi

they want you to plot at least 3 points, so you have to find 3 points for each equation
but assuming you show that work, it sounds ok to use a computer to plot the graphs.
I use Geogebra (free download... but it takes a while)
I know there are plotting tools on the web.

- anonymous

what are the rest of the plots, im not trying to cheat or anthing but I will be in sireous trouble if I don't get a passing grade on this and I need it done now. please just tell me the other parts

- phi

for example
https://www.plotgraphs.com/
here is what it looks like

##### 1 Attachment

- anonymous

@phi

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