1. Bell Ringer 03 Discussion on Midterm and Quiz Discussion on Midterm and Quiz You are required to go to at least 2 days of tutoring for test corrections if you have A score of 13 (65%) or below on your Midterm Part 1 and/or A score of 13 (65%) or below on your Midterm Part 1 and/or A score of 6 (67%) or below on your Midterm (Part 2) and/or A score of 6 (67%) or below on your Midterm (Part 2) and/or A score of 38 (69%) or below on your Chapter 2 Quiz A score of 38 (69%) or below on your Chapter 2 Quiz

2. Project Samples one per group Samples one per group Due Friday or Tuesday Due Friday or Tuesday

3. Step 1: Find the amount of change Step 2: Find the percent using the amount of change as the numerator and the original number as the denominator Step 3: Set up and solve a proportion to find the percent of increase or decrease. Ex. 1 Original: 25 New: 28 Step 1: 28 – 25 = 3 (increase) Step 2 and 3: change 3 = r original amount 25 100 25( r) = 3(100) Cross products 25r = 300 Simplify 25 25 Divide 25 on both sides r = 12 Simplify The percent of increase is 12%. FIND THE PERCENT OF CHANGE

4. Example 2: Original: 30 New: 12 Step 1: 30 – 12 = 18 (decrease) Step 2 and 3: change 18 = r original amount 30 100 30( r) = 18(100) Cross Products 30r = 1800 Simplify 30 30 Divide 30 on each side r = 60 Simplify The percent of decrease is 60%. FIND THE PERCENT OF CHANGE

5. Sales Paper Activity Choose an item and find the percent of decrease or increase. Choose an item and find the percent of decrease or increase.

6. p. 121-122 Shared Practice Do 1, 2, 17 and 19 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.

7. 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

8. 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.

9. 8. Prom: A limo costs $85 to rent 3 hours plus a 7% sales tax. What is the total cost to rent the limo for 6 hours? 8. Prom: A limo costs $85 to rent 3 hours plus a 7% sales tax. What is the total cost to rent the limo for 6 hours?

10. HW p. 122 14-20 even, 24, 26 Bring an ad from the sales paper of an item showing work finding the percent of increase. EXIT SLIP p. 121 3 and 4

11. 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

12. 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.