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Worldwide Mobile Phone Shipments For selected years from 2009 and projected to 2016, the number of worldwide mobile phone shipments, in millions, can be modeled by N(t) = –7.88t2 + 335.33t – 1202.14, where t is the number of years after 2000. Because of new technology and market saturation, mobile phone shipments may decrease in the future.
a. Graph the function for the years 2005 through 2020.
b. Graph the function for the years 2005 through 2030 and find the year in which worldwide mobile shipments are a maximum.
c. If the model is valid for years after 2020, what will happen to worldwide mobile shipments?
(Source: portioresearch.com)
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