answer:1. **Search Engine Optimization (SEO):** This tactic involves optimizing a website or webpage with the aim of making it more visible on search engine results pages (SERPs). This includes on-page and off-page optimization techniques such as creating high-quality, keyword-rich content, building authoritative backlinks, and enhancing website speed and responsiveness. 2. **Social Media Marketing:** Social media marketing involves the use of various social media platforms to engage with prospective customers and promote a brand or business. This entails posting regular updates on the company's social media profiles, launching targeted ad campaigns, and interacting with the followers to create brand awareness and loyalty. 3. **Email Marketing:** Email marketing is the practice of sending out commercial messages to a group of people using email. This is typically done by developing an email list of subscribers and sending out regular newsletters, promotional emails, and other targeted messages to engage with customers and drive sales.

answer:Here is a detailed timeline for a software development project for developing a mobile app for an online payment system: Week 1-2: Planning and Research - Conduct market research to understand the target audience and their needs - Develop the project plan and define objectives, goals, and deliverables - Identify the project team and their roles and responsibilities Week 3-4: Design - Develop wireframes and mockups of the app based on the research findings - Finalize the UI/UX design of the app and get feedback from the project team and stakeholders - Develop a technical design of the app that outlines the architecture, database design, and API integrations Week 5-8: Development - Develop the app based on the technical design - Conduct unit and integration testing to identify and fix bugs - Conduct code reviews to ensure code quality and adherence to the development standards Week 9-10: Testing and QA - Conduct system testing, acceptance testing, and user testing to ensure the app meets the acceptance criteria - Fix bugs, if any, based on the testing results - Perform regression testing, if needed Week 11: Deployment - Deploy the app to the app stores (Apple App Store and Google Play Store) - Conduct performance testing to ensure the app is running smoothly Week 12: Maintenance and Support - Monitor the app, fix bugs, and release updates, as needed - Provide customer support and address user issues and feedback - Update and enhance the app based on user feedback and market trends.

answer:```python # Import necessary libraries import sqlite3 # Connect to the database conn = sqlite3.connect('user_database.db') c = conn.cursor() # Define function to query user information def query_user_info(user_id): # Create query statement query = '''SELECT * FROM user_info WHERE id = ?''' # Execute query c.execute(query, (user_id,)) # Fetch query result result = c.fetchall() # Close the connection conn.close() # Return query result return result # Example query user_id = 1 user_information = query_user_info(user_id) print(user_information) ```

answer:The price after a 15% discount would be 85.00, calculated as follows: The discount amount would be (15 / 100) * 100, which is 15. So, the price after discount would be the regular price minus the discount amount, which is 100 - 15 = 85.