a). Your friends are coming over for lunch and you realize you have forgotten to get groceries You go to the local market, where there are about 50 stalls You are in a hurry, so you decide to do all of your shopping at the first two stalls. 

b). You find a stall that sells good quality vegetables and fruit However, you do not have enough money on you You start to haggle and agree on a 15 percent discount for the products you are buying. 

c). Despite being in a hurry, you now decide to go around the market to check the prices and quality at all stalls. 

Which of these statements deals with optimization, which deals with equilibrium, and which deals with empiricism? Explain.