please answer questions 4-10

4. Describe what is meant by the Extreme programming (XP) practices of test-first development and code refactoring. 5. Describe what is meant by the following two Scrum concepts: "product backlog" and "team velocity". 6. What is a Scrum sprint and what activities are taking place during the sprint? 7. Kanban is another popular framework similar to Scrum that is used to manage software projects. Describe what is shown on a Kanban board and how companies use the board. 8. What activities take place during the Define \& Ideate Phases of the Design Thinking Process? 9. Describe 2 ways poor project management can impact software quality. 10. The risk management process presented in Chapter 22 consists of several stages. What activities take place during the risk analysis and risk planning stages