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 515 + x * 0.5 * 280, plot 125 + x * 0.75 * 280, plot x * 1 * 280, plot 6890
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random