Using the Internet, conduct a thorough search for more information on using What-lf Analysis as outlined in eText Excel Module 8. Choose one bullet listed below and explain and also include a reason to use in your worksheet for your bullet from the following: Choose only one from the following and explain in detail; do not just list the steps to create unless stated: Session 8.3 Explore the principles of a product mix Run Solver to calculate optimal solutions Create and apply constraints to a Solver model Save and load a Solver model You may also answer one of the following questions with a 150-word count to reply to my post and meet the requirement: 1. What is an add-in? 2. What are three options for the objective cell using Solver? 3. What is an objective cell? What is a variable cell? 4. What are the six types of constraints you can put on a cell in a Solver model? 5. What is an iterative process? 6. What is the difference between a binding constraint and a nonbinding constraint? 7. In the Solver report, what is meant by the term "slack