This video uses a real world scenario to demonstrate how to multiply and divide negatives. We will begin to solve the problem of: How can I escape Dr. Deviant's vat of vileness?

Originally released by Apperson, 2013. Streaming video file encoded with permission for digital streaming by Infobase on April 30, 2015.

What We Know vs. What We Need to Know (8:25); --How Fast is the Stuff Oozing into the Tank? (3:48); -- How Can I Calculate the Height of the Ooze After a Certain Amount of Time has Passed? (3:07); -- When Will I be Able to Stand With my Head Above the Ooze? (1:59); -- Solving the Big Question (5:19); .