00:02
Okay, when they tell you that the rate of decay equals the amount that you have, or proportional amount you have, it's an exponential function.
00:12
So they tell us the initial amount is $1 .5 million, and after two years you have $1 .2 million, so that's what you use to find your k.
00:19
So you're going to have 1 .2 equals 1 .5e to the, there's no negative there.
00:27
I'm sorry, k times 2.
00:30
So 1 .2 divided by 1 .5 is 0 .8.
00:33
It's essentially 12 over 15, which is 3 over 5.
00:38
Oh, it's 0 .6 then, sorry.
00:42
Not 0 .8.
00:49
I'll fix that for you.
00:56
Equals e to the 2k...