The total worldwide digital music revenues R, in billions of dollars, for the years 2012 through 2017 can be modeled by the function 

where x is the number of years after 2012. 

(a) Find R(0), R(3), and R(5) and explain what each value represents. 

(b) Find r(x) = R(x - 2). 

(c) Find r(2), r(5) and r(7) and explain what each value represents. 

(d) In the model r = r(x), what does x represent? 

(e) Would there be an advantage in using the model r when estimating the projected revenues for a given year instead of the model R?

Transcribed Image Text:

R (x) = 0.15x²0.03x + 5.46