Exponential Decay / Finding Half Life

Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! Exponential Decay / Finding Half Life - In this video, I find the half life of a substance that is decreasing annually by 4%. For more free math videos, visit http://PatrickJMT.com