In early December Alice and Bob decided to open Second Caf$$ with $$16,000$ of their own money and $$21,000$ borrowed from a friend. They have spent $$12,000$ on equipment and furniture, and they have purchased $$2,800$ worth of cups for cash which they expect will be used over the next three months. Having put down a $$2,400$ deposit for a location on Main St$.,$ they will pay the first month$$s rent when they open their doors on January $1.$