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**Chapter 1: Data, Functions, and Models****Section 1.1:** Making Sense of Data

**Section 1.2:** Visualizing Relationships in Data

**Section 1.3:** Equations: Describing Relationships in Data

**Section 1.4:** Functions: Describing Change

**Section 1.5:** Function Notation: The Concept of Function as a Rule

**Section 1.6:** Working with Functions: Graphs and Graphing Calculators

**Section 1.7:** Working with Functions: Getting Information from the Graph

**Section 1.8:** Working with Functions: Modeling Real-World Relationships

**Section 1.9:** Making and Using Formulas