1. Percent of change can be applied to sales tax and discounts. Sales tax is a tax that is added to the cost of an item. Is sales tax an example of a percent of increase or a percent of decrease? Sales tax is an example of a percent of increase. Discount is the amount by which the regular price of an item is reduced. Is discount an example of a percent of increase or a percent of decrease? Discount is an example of a percent of decrease.

2. Software costs $39.50. Sales tax is 6.5%. Find the total price of the item. The tax is 6.5% of the cost of the software. Change 6.5% to a decimal (move decimal 2 places left) =.065 6.5% of $39.50 =.065 ($39.50) = $2.5675 Round $2.5675 to $2.57 (tax). Add this amount (tax) to the original price $39.50 + $2.57 = $42.07 The total price is $42.07. FIND THE AMOUNT AFTER SALES TAX

3. P. 121 #6 dress: $22.50; sales tax 7.5% The tax is 7.5% of the cost of the software. Change 7.5% to a decimal (move decimal 2 places left) =.075 7.5% of $22.50 =.075 ($22.50) = $1.6875 Round $1.6875 to $1.69 (tax). Add this amount (tax) to the original price $22.50 + $1.69 = $24.19 The total price is $24.19.

4. p.163 #10. A pair of jeans is on sale for 25% off. The cost of the jeans is $45. Find the discounted price of the jeans. The discount is 25% off the original price. Step 1: 25% of 45 =.25 (45) = $11.25 (amount of discount) Step 2: Subtract $11.25 from the original price. $45 - $11.25 = $33.75 (discounted price) The cost of the jeans after the discount is $33.75. FIND THE AMOUNT AFTER A DISCOUNT

5. Sales Paper Activity Choose an item and find the discount price Choose an item and find the discount price

6. FINDING THE FINAL PRICE # 43. A lamp is $120. It is on sale for 20% off and there is a 6% sales tax on the lamp. Find the final price of the lamp. Step 1: Find the discounted price..20 (120) = $24 Step 2: Subtract the discount amount from the price of lamp $120 – $24 = $96 Step 3: Find the amount of the sales tax..06 (96) = 5.76 (amount of sales tax) Step 4: Find the final price (amount after sales tax is included. $96 + $5.76 = $101.76 The final price of the lamp is $101.76.