1. Do Now 10/13/09 Take out HW from last night. –Text p. 165, #28-34 even, #46-50 even –Text p. 171-172, #16-38 even Copy HW in your planner. –Text p. 179-181 #4-36 even If you are shopping in the mall and see that a shirt is on sale for 40% off, what does that mean? If the price of the shirt is $30 how much will it cost you to purchase it?

2. Homework Text p. 165, #28-34 even, #46-50 even 28) 4/12 = n/3; n = 1 30) t/21 = 40/28; t = 30 32) 3.3 34) 2 46) 7/8 48) 3/5 50) 21 pages

3. Homework Text p. 171-172, #16-38 EVEN 16) D 18) Distribute the 14 to both b and 2; 18b = 14b + 28, 4b = 28, b = 7 20) 2 22) 22 24) -2.5 26) 5.2 28) 7.4 30) -7.1 32) Decreases; as k gets larger, the value of (k/14) get larger. Therefore h must get smaller so that (5/h) will get larger. 34) 18 min 36) 48 km 38) 70.5 km

4. Objective SWBAT solve percent problems

5. Percent- means ‘per one hundred’ or divided by 100. How many cents are there in a dollar?

6. Percent Problems Using Proportions- You can represent “a is p percent of b” using the proportion You can represent “a is p percent of b” using the proportion where a is a part of the base b and, or p%, is the percent. where a is a part of the base b and, or p%, is the percent.

7. Try It Out… What percent of 25 is 17? Write a proportion where 25 is the base and 17 is a part of the base. Percent proportion Substitute and then cross multiply 17 is 68% of 25

8. Try It Out… What percent of 136 is 51? Write a proportion where 136 is the base and 51 is a part of the base. Percent proportion Substitute and then cross multiply 51 is 37.5% of 136

9. Percent Problems Using Equations- You can represent “a is p percent of b” using the equation You can represent “a is p percent of b” using the equation where a is a part of the base b and p%, is the percent. where a is a part of the base b and p%, is the percent.

10. Try It Out… What number is 15% of 88? Use an equation where 15% is the percent and 88 is the base. Percent equation Substitute and then solve the equation 13.2 is 15% of 88

11. Try It Out… 20 is 12.5% of what number? Use an equation where 12.5% is the percent and 20 is a part of the base. Percent equation Substitute and then solve the equation 20 is 12.5% of 160

12. What Have We Learned… Types of Percent Problems (1) Find a percent What percent of 136 is 51? (2) Find a part of a base What number is 15% of 88? (3) Find a base 20 is 12.5% of what number?

13. What Happens When Cupid Shoots an Arrow? He Mrs. Someone

14. Homework Text p. 179-181 #4-36 even