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cholitchild45
cholitchild45
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$1.00 1 page Library Assignment

  • From Mathematics: Calculus
  • Closed, but you can still post tutorials
  • Due on May. 06, 2008
  • Asked on May 05, 2008 at 11:37:31PM
Q:
Human populations can be modeled using an exponential growth function. Use the Library for research or other resources to find the following:

current world population
current U.S. population
current growth rate of the world population
current growth rate of the U.S. population
Starting in the current year, determine the following:

Based on current growth rates, how long will it take world population to reach exactly 7 billion? How long to reach exactly 10 billion?
Based on current growth rates, how long will it take for the U.S. population to reach exactly 400 million? How long for exactly 500 million?


 


   
   
   
   
 
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Posted by:
cxxliu
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$5.00 answered with steps

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  • Posted on May 05, 2008 at 11:58:12PM
A:
Preview: ... d on current growth rates, how long will it take world population to reach exactly 7 billion?<br>Answer: Let x be the number of years taken. Then<br>7,000,000,000 = (6,677,602,292)*(1.0115^x)<br>1.0115^x = 1.048280459<br>x = log(1.048280459) / log (1.0115)<br>x = 4.1236<br>It takes approximately 4 years to reach a world populatio ...

The full tutorial is about 197 words long .
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sudipta
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$10.00 Answered with all steps shown

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  • Posted on May 06, 2008 at 03:34:27PM
A:
Preview: ... ttached ...

The full tutorial is about 6 words long plus attachments.

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Population.doc (30K) (Preview)
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SandyS
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$12.00 Detailed Soutions of 3 problems with one graph

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  • Posted on May 06, 2008 at 04:09:59PM
A:
Preview: ... ution attached ...

The full tutorial is about 6 words long plus attachments.

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cholitchild(solution).doc (37K) (Preview)
   
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