Formula to determine whether or not to tip on take-out food.

tip_or_not.php

/**
 * The ballin' equation.
 */

function tip_or_not(){
  if ( ballin() ) { 
    return true;
  }

  return false;
}

function ballin(){
  global $cash;
  
  if( $cash >= 100000 ){
    return true
  }
  
  return false;
}