In the scientific approach to Business Administration and Economics, it is relevant to include Relations and Functions in mathematical models. The first application of these mathematical concepts in quantitative methods is provided by linear and quadratic functions. Considering the previous statements, submit a response to this Discussion Forum. In it make sure to answer explicitly the following: 1. What is a variable? What are its different types? 2. Define mathematically a Relation and a Function. 3. Discuss what factor makes it interesting to study a Function. You can provide specific examples to illustrate your response