Question

I REALLY need some help! Please help! (Algebra 2)
**I always give a medal to the person with the best answer**

Every day, there are 2 times more likes on an internet video of a bird which is modelled by the function c(n) = (2)n − 1, where n is the number of days since the video posted. On the first day, there were 122 likes. What is the function that shows the number of likes each day?

A. c(n) = (2)122 − 1

B. c(n) = 122(2)n − 1

C. c(n) = (2)(122)(n − 1)

D. c(n) = (122)n − 1

Answer 1

What is the meaning of "(2)n" or "(2)(122)" in this context ?

Answer 2

I have no idea. Nothing in this class makes any sense to me :l

Answer 3

I have been giving people this site and it's been really helpful to them, maybe you would like it to. http://www.wolframalpha.com/input/?i=%E2%88%92x2+%2B+5x+%2B+6+%3D+3x+%E2%88%92+2%3F

Answer 4

Just put in any equation or problem and it will break it down step by step.

Answer 5

Doesn't really help much. The question sounds simple enough but I'm intrigued by this notation I've never seen before in my life.

Answer 6

But, I'm not exactly sure how to set this equation up

Answer 7

Angus, are you typing? You've been typing for quite some time now lol

Answer 8

@ganeshie8 Think you might be able to help with this Algebra 2 question?

Answer 9

Sorry about that, was afk.

Well, starts with 122 likes after the first day so naturally for n=1 , c(n)=122.

Then it says the number of likes doubles every day so for n=2 we have 244 likes, n=3 we have 488 likes and so forth which indicates an exponential growth.

So the answer, outside the context of those notations I am not familiar with, should be something like c(n)=(2^(n-1))*122 in order to verify the context.

Answer 10

But again, I am not at all sure since I have never seen "(2)(122)" in my life.

Answer 11

Well, it's not any of the answer choices, so I don't know what to do ):