0<x<220 0<y<2224/15 max((3056-15*x)*(2224-15*x)/(1536)-(1/81)*(y-220)^2)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.