The purpose of economics is to provide a way to think. Economic thinking and decision-making recognize that because of scarcity something cannot be obtained without giving up something else. Consequently, we must make our decisions by comparing the costs and benefits and evaluating the tradeoffs. In doing so, five principles of economic thought come into play: tradeoffs, incentives, opportunity costs, marginal thinking, and voluntary exchange. Explain with a specific example of each how you apply any THREE of these five principles of economic thought in your everyday life.