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Pre-Cal 40S Slides April 13, 2007

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Darren Kuropatwa
Darren Kuropatwa

Applications of exponential functions: worked problems.

EducationTechnology
1 of 4
What amount of money must be invested today, at 6% compounded annually, if you need $5000 seven years from today?
There are 500 gophers in a field on May 31. On June 20 there are 800. If the gopher population is growing exponentially, how many are there on June 28?
The radioactive gas radon has a half-life of 3.8 days. How much of a 5 g sample remains after 4.2 days?
The population of a colony of Pre-Cal 40S math students grew from 30 to 40 during the period from noon to 2 pm. (These guys really love math!) At what time will the population be 60?

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Pre-Cal 40S Slides April 13, 2007

  • 1. What amount of money must be invested today, at 6% compounded annually, if you need $5000 seven years from today?
  • 2. There are 500 gophers in a field on May 31. On June 20 there are 800. If the gopher population is growing exponentially, how many are there on June 28?
  • 3. The radioactive gas radon has a half-life of 3.8 days. How much of a 5 g sample remains after 4.2 days?
  • 4. The population of a colony of Pre-Cal 40S math students grew from 30 to 40 during the period from noon to 2 pm. (These guys really love math!) At what time will the population be 60?