Colorado State University GC Working with Radioactive Material Paper

As a scientist, you study

2

0

0 grams of a radioactive material for seven months, and suppose you have obtained the following data:

Month

Weight

0

200

1

17

6

.6

2

1

5

1.8

3

138.8

4

118.2

5

103.6

6

91

Note that you are asked to use a graphing utility in this assignment. A recommended online utility is

https://www.desmos.com/calculator (Links to an external site.)

. It allows graphing and then copying and posting into a Word document.

Using a graphing utility, draw a scatter diagram with month and weight as your variables.

Using a graphing utility, build an exponential model from the data

Express the weight as a function of months.

Graph the exponential function in the scatter diagram.

Interpret the parameters of this function

Determine the half -life of the radioactive material.

How much radioactive material will be left after 30 months?

When will you have 40 grams of this radioactive material?