Question: Wireless service spending The total amount spent in the United States for wireless communication services, S (in billions of dollars), can be modeled (that is, approximated with some accuracy) by
S = 6.205 + 11.23t
where t is the number of years past 1995 (Source: Cellular Telecommunications and Internet Association).
(a) What value of t represents the year 2012?
(b) What values of t give S > 250?
(c) In what year does this equation project that spending for wireless communication services will exceed $250 billion?