Math 1001 9C Introductory Examples
1. A town whose population was 12,000 on January 1, 1994 grew at a
rate of 0.3% per month.
a) Give the population function: ____________________
b) Create a table to compare the town’s population in the 10 months following Jan 1,
1994.
t P(t)
0
1
2
3
4
5
6
7
8
9
1
0
c) Predict the town’s population on January 1, 1995. P(___) =
________________
2. Suppose a certain drug has a half-life of 6 hours in the
bloodstream.
a) What is the drug amount function? _____________________
b) At 3:00 pm, Susie takes a 50 mg dose of the drug. What is the drug
amount function?
___________________________
c) How much of the drug will be in Susie’s bloodstream at 7:30 pm?
___________
d) When will the drug amount in the person’s bloodstream reach 20%
of its initial amount?
_____________________
