In Units 2 and 3, you created screencasts to demonstrate your understanding of a variety of concepts. In this activity, you will create screencasts to demonstrate your understanding of applications of exponential functions. Create screencasts demonstrating a solution for each of the following real-life scenarios. 1. Bacteria in a petri dish doubles every 10 minutes. a) If there are 10 bacteria initially, how many are there after 120 minutes? b) If there are 10 bacteria initially, when would there be a million bacteria? 2. The half life of uranium-232 is 68.9 years. a) If you have a 100 gram sample, how much would be left after 250 years? b) If you have a 100 gram sample, how long would it take for there to be 12.5 grams remaining? Submit your screencasts to your teacher. Click on the Submit Your Work link below to access the rubric for this activity