Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
plot 70 + (70 e^(-t*24 % 2F80))% 20for% 20t% 20% 3D0% 20to% 2010
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random