2.5 Question 88

[Eigenvalue]

Precalculus
Michael Sullivan
Edition 4
Chapter 2, Section 2.5

The total projected worldwide digital music revenues R, in millions of dollars, for the years 2005 to 2010 can be estimated through the function R(x)=170.7x²+1373x+1080, where x is the number of years after 2005.

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

b) find r=R(x-5)

c) find r(5), r(8), and r(10), and explain what each value represents

d) in the model r, 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