This document presents solutions to a homework assignment focused on data and information management, encompassing various mathematical problems. The assignment covers a range of topics, including calculations, algebraic equations, simultaneous equations, and optimization problems. Specific tasks involve performing calculations, solving linear equations, working with formulas, and applying mathematical concepts to real-world scenarios. The document provides detailed solutions for each task, demonstrating the application of mathematical principles to analyze data and solve practical problems. The assignment also touches on concepts like supply and demand, and linear programming to optimize resource allocation. Overall, the assignment aims to enhance the student's ability to apply mathematical skills in data analysis and information management contexts.