Equivalent Expressions and Discounts

The video tutorial covers Module 2 Lesson 19, focusing on writing, evaluating, and finding equivalent expressions with rational numbers. It includes examples of calculating discounts and adjusting expressions for price increases. The lesson concludes with a summary and practice guidelines.

What is the purpose of the tic-tac-toe review game mentioned in the lesson?

• To practice solving equations

• To review equivalent expressions

• To learn about rational numbers

• To introduce new vocabulary

If an item's original price is $100 and the discount is 20%, what is the new price?

• $80

• $20

• $120

• $100

Which expression correctly represents the new price after a 20% discount on an item priced at $50?

• 50 / 0.8

• 50 - 50 * 0.2

• 50 + 50 * 0.2

• 50 * 1.2

What is the discount amount if the original price is $28 and the discount is 20%?

• $22.40

• $2.80

• $28.00

• $5.60

How can you express the new price of an item after a 33% discount using x as the original price?

• x / 0.67

• x * 1.33

• x + 0.33x

• x - 0.33x

If an item's price increases by 33%, which expression represents the new price?

• x - 0.33x

• x / 1.33

• x + 0.33x

• x * 0.67

What is the new price of an item originally priced at $56 after a 33% discount?

• $37.52

• $18.48

• $56.00

• $74.48

What is the equivalent expression for calculating the price after a discount and adding sales tax?

• Discount price plus sales tax

• Original price plus sales tax

• Original price minus sales tax

• Discount price minus sales tax

Which of the following is true about equivalent expressions?

• They yield the same value for any substitution

• They are only used in algebra

• They cannot be used with variables

• They always have different values

What is the final step in calculating the cost of an item after applying a discount and sales tax?

• Divide the discount price by the sales tax

• Add the sales tax to the discount price

• Subtract the sales tax from the discount price

• Multiply the original price by the sales tax