2. Welcome to Interactive Chalkboard Mathematics: Applications and Concepts, Course 2 Interactive Chalkboard Copyright © by The McGraw-Hill Companies, Inc. Developed by FSCreations, Inc., Cincinnati, Ohio 45202 Send all inquiries to: GLENCOE DIVISION Glencoe/McGraw-Hill 8787 Orion Place Columbus, Ohio 43240

3. Splash Screen

4. Contents Lesson 1-1A Plan for Problem Solving Lesson 1-2Powers and Exponents Lesson 1-3Order of Operations Lesson 1-4Algebra: Variables and Expressions Lesson 1-5Algebra: Equations Lesson 1-6Algebra: Properties Lesson 1-7Sequences Lesson 1-8Measurement: The Metric System Lesson 1-9Scientific Notation

5. Lesson 4 Contents Example 1Evaluate an Expression Example 2Evaluate Expressions Example 3Evaluate Expressions Example 4Evaluate Expressions Example 5Use an Expression to Solve a Problem

6. Example 4-1a Answer: 2 Evaluate

7. Example 4-1b Answer: 11 Evaluate

8. Example 4-2a Answer: 62 Replace x with 7 and y with 9. Add 35 and 27. Use the order of operations. Evaluate

9. Example 4-2b Answer: 24 Evaluate

10. Example 4-3a Answer: 21 Replace r with 7 and s with 12. Divide. The fraction bar is like a grouping symbol. Evaluate

11. Example 4-3b Answer: 12 Evaluate

12. Example 4-4a Replace a with 5. Add 5 and 25. Use the order of operations. Answer: 30 Evaluate

13. Example 4-4b Answer: 15 Evaluate

14. Example 4-5a PHYSICS The final speed of a falling object is found by using the expression v + 9.8t, where v is the speed when you begin timing and t is the length of time the object falls. Find the final speed when the object starts falling at 3 meters per second and falls for 2 seconds. Replace v with 3 and t with 2. Add 3 and 19.6. Use the order of operations. Answer: The final speed of the object is 22.6 meters per second.

15. Example 4-5b BOWLING David is going bowling with a group of friends. His cost for bowling can be described by the formula 1.75 + 2.5g, where g is the number of games David bowls. Find the total cost of bowling if David bowls 3 games. Answer: $9.25

16. End of Lesson 4

17. Transparency 5 Click the mouse button or press the Space Bar to display the answers.

18. Transparency 5a

19. End of Custom Show End of Custom Shows WARNING! Do Not Remove This slide is intentionally blank and is set to auto-advance to end custom shows and return to the main presentation.

20. End of Slide Show