00:01
So my approach to this problem is basically setting it up as a times b to the x power plus c.
00:11
And it's up to you.
00:13
Maybe you use like celsius for over time.
00:17
So i guess i'd have to change my variable x to be t.
00:21
But either way, if the room temperature is 20 degrees, that would be this value right here.
00:28
So plus 20.
00:29
And then my a value, it's not going to be the 90, but the a value plus 20 needs to equal 90.
00:40
So if you subtract 20 over, you get 70.
00:44
So what i need to do next is plug in, let's see, it says after one minute, the temperature of the coffee is now at 85.
00:56
So what i have to do is subtract the 20 over, which brings me to 65, and then divide by 70.
01:04
And that would be my b value.
01:06
I might even just leave it like that, but i would reduce 65 over 70 reduces to 13 over 14.
01:15
So when they, so let me just rewrite that formula, c of t...