1. Lesson 8-10

2. Objectives By the end of this lesson you will be able… Solve percent problems that involve discounts, tips, and sales, tax.

3. What is a Formula? 3 Formulas we are going to be working with today Discounts Step 1: Discount=price discount rate Step 2: Total Cost= price – discount Tips Step 1: Tip=bill tip rate Step 2: Total Cost=bill + tip Sales Tax Step 1: Sales Tax=price sales tax rate Step 2: Total Cost= price + sales tax

4. Practice Formulas Discounts Step 1: Discount=price discount rate Step 2: Total Cost= price – discount Tips Step 1: Tip=bill tip rate Step 2: Total Cost=bill + tip Sales Tax Step 1: Sales Tax=price sales tax rate Step 2: Total Cost= price + sales tax A music store sign reads 10% off the regular price. if Nichole wants to buy a CD whose regular price is $14.99, about how much will she pay for her CD after the discount?

5. Practice Discounts Step 1: Discount=price discount rate Step 2: Total Cost= price – discount A music store sign reads 10% off the regular price. if Nichole wants to buy a CD whose regular price is $14.99, about how much will she pay for her CD after the discount?

6. Practice Formulas Discounts Step 1: Discount=price discount rate Step 2: Total Cost= price – discount Tips Step 1: Tip=bill tip rate Step 2: Total Cost=bill + tip Sales Tax Step 1: Sales Tax=price sales tax rate Step 2: Total Cost= price + sales tax Leslies lunch bill is $13.95. She wants to leave a tip that is 15% of the bill. About how much should her tip be?

7. Practice Tips Step 1: Tip=bill tip rate Step 2: Total Cost=bill + tip Leslies lunch bill is $13.95. She wants to leave a tip that is 15% of the bill. About how much should her tip be?

8. Practice Formulas Discounts Step 1: Discount=price discount rate Step 2: Total Cost= price – discount Tips Step 1: Tip=bill tip rate Step 2: Total Cost=bill + tip Sales Tax Step 1: Sales Tax=price sales tax rate Step 2: Total Cost= price + sales tax Marc is buying a scooter for $79.65. The sales tax rate is 6%. About how much will the total cost of the scooter be?

9. Practice Sales Tax Step 1: Sales Tax=price sales tax rate Step 2: Total Cost= price + sales tax Marc is buying a scooter for $79.65. The sales tax rate is 6%. About how much will the total cost of the scooter be?

10. Review In this lesson you have learned how to… Solve percent problems that involve discounts, tips, and sales, tax. Check for understanding (3, 2, 1)