Solve each problem. See Examples 4 and 5The table shows the number of cellular phone
Chapter 6, Problem 37(choose chapter or problem)
Solve each problem. See Examples 4 and 5The table shows the number of cellular phone subscribers (in millions) in the United States.We used the preceding data to develop the quadratic equation y = 0.590x2 + 4.523x + 0.136,which models the number y of cellular phone subscribers (in millions) in the year x, whererepresents 1990, represents 1992, and so on.(a) Use the model to find the number of subscribers in 2000, to the nearest tenth. Howdoes the result compare with the actual data in the table?(b) What value of x corresponds to 2008?(c) Use the model to find the number of cellular phone subscribers in 2008, to the nearesttenth. How does the result compare with the actual data in the table?(d) Assuming that the trend in the data continues, use the quadratic equation to estimatethe number of cellular phone subscribers in 2010, to the nearest tenth.
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