00:01
All right, this one says a certain culture of bacteria can be modeled by this exponential growth.
00:09
Formula, n of t equals 50.
00:12
I think it's 50 or it might be 500.
00:14
Let me look.
00:15
500.
00:17
All right, so it's 500, e to the 0 .45t, where t is measured in hours.
00:26
So it says, what's the initial amount? well, that's your big number in front of your t, or you're, your front of your e, excuse me, so that your initial amount is 500 bacteria, right? now it says how many bacteria after three hours, and then when will it reach 10 ,000? so three hours, so you take your formula, so n of 3 equals 500 e of 0 .45 times 3.
01:07
So you just literally put all that in the calculator.
01:10
So 500e to the 0 .45 times 3...