13 appls solve t.notebook
April 06, 2017
13 Applications of Exponentials
TSW solve exponentials modeling real-world problems
Sometimes we want to solve for t (time) in an exponential
Population Growth: India‛s population grows at 1.22%
annually. In 2014, India‛s population was 1.26 billion. In
what year will India‛s population grow to 1.6 billion?
Use A=Pert
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13 appls solve t.notebook
April 06, 2017
13 Applications of Exponentials
TSW solve exponentials modeling real-world problems
Bacteria: A certain bacteria culture triples every 8 hours.
How long will it take a culture of 100 cells
to grow to 1000? Round your answer to hours and
minutes.
Use A=P(b)t
2
13 appls solve t.notebook
April 06, 2017
13 Applications of Exponentials
TSW solve exponentials modeling real-world problems
Millionairess: I have a dream of becoming a millionaire. I have
$20,000 to invest and find an account that will pay 5.4%
interest. How long until my savings is one million dollars?
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13 appls solve t.notebook
April 06, 2017
13 Applications of Exponentials
TSW solve exponentials modeling real-world problems
Vitamin Potency: A prescribed vitamin‛s active ingredient
has a half-life of 6 months. If the vitamin is bottled with
300mcg of active ingredient, how long until the active
ingredient decays to 60 mcg and no longer considered
effective?
How much of the active ingredient is left two
years after bottling?
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