The Bad Muffin
The Bad Muffin ate a Bad Bad Unicorn and turned into a Bad Bad Bad Potato. To turn back into a Bad Muffin he needs to drink 500 liters of Bad Bad Potion. On day 1 the Bad Bad Bad Muffin orders 18 bottles of Bad Bad Potion, 24 bottles on the second day, and in general 6x+12 bottles of Bad Bad Potion on day x. If each bottle contains half a liter of Bad Bad Potion how many days does the Bad Bad Bad Muffin have to wait before he can turn into a Bad Muffin again?