This data appear to follow an exponential function.
y = 1.5^(x - 5.2)
The domain of this function is x greater or equal that 0.
The range of this function is y greater or equal than 0.
http://www.billboard.com/biz/articles/news/digital-and-mobile/5855162/digital-music-sales-decrease-for-first-time-in-2013
This article doesn't affect my predictions of domain and range because the sales can't be negative.
The domain of this function is x greater or equal that 0.
The range of this function is y greater or equal than 0.
http://www.billboard.com/biz/articles/news/digital-and-mobile/5855162/digital-music-sales-decrease-for-first-time-in-2013
This article doesn't affect my predictions of domain and range because the sales can't be negative.