Prior to beginning work on this discussion, please review the Weekly Lecture and assigned page ranges from Chapters 5 and 7 in your textbook to gain an understanding of what goes into planning and executing projects. Then, answer the following questions in your post. Project managers are given all sorts of projects. How do project managers prepare time and cost estimates for their projects, especially when they are not familiar with the project scope? How would you prepare time and cost estimates for your project? Understanding the critical path of a project is key. How would you explain the concept of critical path to someone who may not be aware of it? How will understanding your project's critical path affect your projects overall timeline