Our satisfaction guarantee ensures that you always find a study document that suits you well. Every Formula You Will Need for Edexcel Business A Level Paper 2.(one is missing - can you work out which one?) The practice papers in this book are designed to help you prepare for your Pearson Edexcel GCSE. Business examinations. Product portfolio analysis assesses the position of each product or brand in a firm's portfolio to help determine the right marketing strategy for each. This document provides formulas and identities for various math topics not included in the standard formula booklet, summarized as follows: The system of double entry book-keeping is a method of recording transactions in the books of account of a business. Good luck, and we hope you enjoy your course. Ideal as a self-study text to build students' knowledge and competence in completing calculations.