1. Example 1: A colony of bacteria doubles every 6
days. If there were 3000 bacteria to begin with
how many bacteria will there be in 15 days?

2. Example 2: The mass (in grams) of radioactive material in a sample is
given by:
where t is measured in years.
(a) Find the half­life of this radioactive substance.

3. A $5000 investment earns interest at the annual rate of 8.4% compounded monthly.
a) What is the investment worth after one year?
b) What is it worth after 10 years?
c) How much interest is earned in 10 years?

4. Try these now ...

5. Solve each of the following ...

6. Expand ... Simplify ...

7. An amount of $3,000.00 is deposited in a bank paying an annual interest rate of
3 %, compounded continuously.
(a) Find the balance after 4 years.
(b) How long would it take for the money to double?

8. 1. Find the domain and range of f.
2. Find the horizontal asymptote of the graph.
3. Find the x and y intercepts of the graph. of f if there are any.
4. Sketch the graph of f.

9. 1. Find the domain and range of f.
2. Find the horizontal asymptote of the graph.
3. Find the x and y intercepts of the graph. of f if there are any.
4. Sketch the graph of f.