2. Suppose the benefit and cost structure of a firm is: B(Q)=3000-502 C(Q)=Q2 What value makes the net marginal benefit NMB(Q)=B(Q)-C(Q) zero? 3. You have computer a market demand curve for X and it looks like this: Qxd=20,000-10PX+7Py+3M Where Px is the price of X Py is the price of a related good Y Mis the income of the buyers in the market What can you say about the demand from good X from this demand curve? 7. Sketch out a supply and demand diagram for snow tires and explain (comparative statics) what is likely to happen to the price and sales of snow tires in the event of a particularly snowy winter