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Lesson 2-7. Percent of Change. The Essential Question. Why is it important to be able to express algebraic expressions in different way? Answer:. A short review. More Review. The _________ oz is the best buy. Objective:. Find the percent of change

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## Lesson 2-7

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**Lesson 2-7**Percent of Change**The Essential Question**• Why is it important to be able to express algebraic expressions in different way? • Answer:**More Review**The _________ oz is the best buy.**Objective:**• Find the percent of change • Solve problems involving percent of change Vocabulary: Percent of change Percent of increase Percent of decrease**Percent of Change**• Determine whether the percent of change is a percent of increase or a percent of decrease Then find the percent of change. • Original: 32 • New: 40 • Find the amount of change. Since the new amount is __________ than the original, the percent of change is the percent of __________. • Find the percent using the original number, 32, as the base. • Change to percent**Real World Problem:**• The price a used-book store pays to buy a book is $5. The store sells the book for 28% above the price that it pays for the book. What is the selling price of the book? • Let s = the selling price of the book**Check your progress…**• A baseball cap is on sale for 15% off the original price. I the original price of the cap is $19.99, what is the discounted price?**Activities for the rest of the day**• Mid-chapter quiz • When your quiz is complete, work on your homework, quietly

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