How could this example stated in this question be of importance to correctly stating the objective function and constraint in linear optimization? Looking at where to spend advertising dollars to gain the most traffic and return on investment. The days of paper advertisements are coming to an end. More and more companies are looking to social media to help drive traffic and its working. I personally have heard of so many companies only through social media and have chosen to shop with those companies solely based on the online reviews I have read. Other than groceries, we buy 90% of our products online. Dont' need a formula, just need to explain how could this example be of importance to linear optimization?