1. WARM UP 1. A number that is part of 100 is the ______________ of the number. 2. 60 is what percent of 80? 3. 20% of 40 is what number? 4. 7 is 5% of what number? 5. 25 is what percent of 80?

2. LESSON 47, SOLVING PROBLEMS INVOLVING THE PERCENT OF CHANGE EXPRESSIONS AND EQUATIONS

3. PERCENT OF CHANGE

4. EXAMPLE Find the percentage of increase or decrease from an original price of $35 to a new price of $49.

5. EXAMPLE 78 changes to 88. Find the percent of increase or decrease.

6. EXAMPLE The first 3 numbers in a sequence are 30,000, 12,000, and 4800. Use percent to describe the pattern of the sequence. List the next 2 terms.

7. EXAMPLE A holiday weekend sale advertised a 25% discount on a TV that regularly sells for $500. After the holiday weekend, the sale price was increased by 25%. The management said this should put the new price back to its original price of $500. Is the management correct? If not, which price is higher? Explain.

8. HOMEWORK QUESTIONS

9. CORRECTING HOMEWORK Be kind. Be diligent. Hold questions until the end. Make sure the paper in front of you is in black ink or pencil. Make sure the paper in front of you is complete and that work has been shown.

10. HOMEWORK 1 st and 2 nd hour: Lesson 47 #1-30 3 rd hour: Lesson 47 #1-15