The annual cost C (in thousands of dollars) and revenue R (in thousands of dollars) for a company each year from 2010 through 2016 can be approximated by the models C = 256 – 9t + 1.1t2 and R = 341 + 3.2t where t is the year, with t = 10 corresponding to 2010. (a) Write a function P that represents the annual profit of the company. P(t) =

The digital music industry has been growing steadily since the 2000s. The function h represents the percentage of music sales that are digital as a function of the number of years since 2002, t. h(t) = 15.8182+49.91t %3D 17.0418+0.52t