Example 2

The bacteria [i]Streptococcus lactis[/i] doubles every 26 minutes in milk. If a container of milk has 4 bacteria in it to start, write an equation that models this scenario and then graph the equation.

[list=1] [*]Read the problem statement and then reread the scenario, identifying the known quantities. [*]Substitute the known quantities into the general form of the exponential equation [math]y = ab^x[/math]. [*]Create a table of values using the resulting equation. [*]Set up the coordinate plane. [*]Plot the points on the coordinate plane and connect the points with a curve. [/list] This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on their resources.