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Ch. 5/Ch. 6
Review
Name:
1. The 2000 Census estimates the population of Scranton, SC at approximately 942 people. If
this small town grows at a rate of .003 % per year, predict the population of Scranton in the
year 2025. In what year will Scranton consist of about 10,000 people?
2. After 3 cups of coﬀee, the amount of caﬀeine in your blood is 250 mg, which will decrease by
12% every hour. How much caﬀeine is still in your blood after 2 hours? How long will it take
for the caﬀeine to drop to 100 mg?
3. The price of a house increased from $150,000 to $250,000 over a 15year period. Create an
exponential model for the price of the house,
P
, as a function of time
t
in years. How much is
the home worth after 100 years?
4. Your place of work oﬀers an IRA at a 3.25% APR, and you decide to deposit $15,000. If you
plan to retirement in 25 years, how much will the IRA contribute to your retirement?
5. Amanda’s parents invested $10,000 in a 529 College Savings Plan when she was 7 years old.
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This note was uploaded on 06/13/2011 for the course MATH 111 taught by Professor Hitchcock during the Fall '08 term at South Carolina.
 Fall '08
 HITCHCOCK

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