A small bouffe at university sells cookies and each day the owner must determine bow many cookies to order. From the past experiences he knows that the number of the soled cookies can be between $8$ and$14.$ The bouffe pays the bakery $4$TL for each cookie and sells it for $5\mathrm{.}5$ TL$.$ At the end of the day a chicken feed mix company buy the remained cookies for $0\mathrm{.}5$ TL each. Fine the optimal strategy for ordering by using the following criteria. $(15$ points$)$