Instructions:

Radioactive decay for a particular substance is illustrated in this application by the formula A = 300(e^–0.06t), where t is the number of years. A is the number of grams of substance present at a given time, t. By clicking on the buttons at the top of the application, you can see a demo (after clicking on "run"), the amount after a certain number of years, or amount of substance at its half-life point.

This application can also be changed by adjusting the coefficient on the t variable (see the upper right hand corner of the application). This change causes the blue line on the graph to change accordingly. Don’t forget to do the original problem. It is problem number 81, located on textbook page 540.

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