00:01
There's definitely a connection between a half -life problem.
00:04
So the amount over time, if i'm doing the half -life, is the initial amount, times one -half to the t over k power, where k is the half -life.
00:15
So in this problem, the k is going to be 5 .7 hours.
00:21
But then there's another formula.
00:24
A of t is equal to the initial value, so that's the same.
00:28
I'll underline the things that are the same.
00:30
But then doing 1 minus r to the t power.
00:35
So the t is also the same.
00:38
I meant to underlining green.
00:40
So what i'm trying to get at is one half to the 1 over k power needs to equal 1 minus r to the t power.
00:49
Well, let's investigate...