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Two weeks ago, Alice came home from vacation and noticed that a bean plant was growing in her garden. Today, the stalk is 452 centimeters tall, and Alice observed that its height increases by 5% every day. How tall was the plant 2 weeks ago when she first noticed it growing? Express your answer as a decimal to the nearest tenth.

 

 

Thank you!

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2+0 Answers

 #1
avatar+79894 
+1

 

Not sure what "interest rate" is being accounted for, here.....maybe we should leave that for the "bean counters"......however....as to the "bean growers" like Alice, we can proceed as follows :

 

2 weeks = 14 days....so

 

452  = H ( 1.05)^14    wher H is the original height

 

Divide both sides by   (1.05)^14

 

452 / (1.05)^14   = H  ≈  228.3  cm  

 

 

cool cool cool

CPhill  Dec 3, 2017
 #2
avatar+277 
+1

:D:D


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