This document discusses the benefits of studying A-Level mathematics and how it can help with other subjects. It lists several other subjects that mathematics supports, such as physics, chemistry, computing, geography, and business studies. It also outlines several high-paying career paths that are accessible with A-Level mathematics qualifications, such as actuarial work, engineering, teaching, and more. Finally, it notes that people with A-Level mathematics earn an average of 10% more than those without.