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Kathy bikes 9 miles on Monday.  Each subsequent day she bikes 12% more than she did the previous day.  By the end of the day on Friday, how many total miles has Kathy biked?  Express your answer to the nearest whole number.

 Jul 23, 2022
 #1
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Geometric Sum  where  r = 1.12   

 

   9 [ 1 - (1.12)^5] /  [ 1 -  1.12 ]  ≈  57 miles

 

cool cool cool  

 Jul 23, 2022

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