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In 1985, there were 285 cell phone subscribers in the small town of Centerville. The number of subscribers increased by 75% per year after 1985. How many cell phone subscribers were in Centerville in 1994?

Mathisfornerds  Apr 13, 2018
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We have the following  exponential function

 

N = 285 (1.75)x    where N is the number of subscribers after x years

 

Since 1994 is 9 years after 1985, we have

 

N  = 285 (1.75)9    ≈  43,872  subscribers

 

 ( That's a pretty big increase  !!!  }

 

 

cool cool cool

CPhill  Apr 13, 2018

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