Four principles of individual decision-making

Write a 350to 700-word paper in which you address the following:
List and briefly explain the four principles of individual decision-making.
Provide an example of a decision in which you compared the marginal benefits and the marginal costs associated with that decision.
What were the marginal benefits and marginal costs associated with that decision?
What incentives could have led you to make a different decision?
Explain how the principles of economics affect decision-making, interaction, and the workings of the economy as a whole.