Mathematics, 14.12.2021 01:00 jells16
From 1990 to 1997, the number of cell phone subscribers S (in thousands) in the US can be modeled by, S = 5535.33(1.413)x where ‘x’ is number of years since 1990.
a ) Identify the growth factor (constant ratio) and annual percent increase
b) In what year was the number of cell phone subscribers about 31 million? How do you know?
c ) According to the model, in what year will the number of cell phone subscribers exceed 90 million? How do you know?
d ) Determine the number of subscribers in 2010. How do you know?
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