The student consistently and correctly uses correct mathematical notation, symbols, and terminology. Key terms and variables are defined and explained when first introduced, and additional terms are defined in detail in appropriate places. The main concepts, such as loans and compound interest, are described in the introduction. Multiple forms of mathematical representation are present, and all mathematical calculations are explained. Results are rounded only at the end of the calculations thread, and the graphs, tables, and diagrams are labeled at the bottom. The student used a deductive method and set out logical proofs where appropriate.
