This document provides an overview of how to solve different types of applied problems using linear equations, including geometry problems, motion problems, mixture problems, and investment problems. It gives examples of each type of problem and shows the step-by-step process for setting up and solving the linear equation to find the unknown value. Problem-solving strategies include using diagrams, tables, variables to represent unknowns, and checking the answer. The document is intended to teach students how to model and solve word problems involving linear equations.