Like this presentation? Why not share!

# Module 2, topic 2

## by Annie cox on Jun 09, 2011

• 332 views

### Views

Total Views
332
Views on SlideShare
253
Embed Views
79

Likes
0
0
0

### 1 Embed79

 http://ncvps.blackboard.com 79

### Categories

Uploaded via SlideShare as Microsoft PowerPoint

## Module 2, topic 2Presentation Transcript

• Order of Operations
• P arentheses
• E xponents
• M ultiplication
• D ivision
• A ddition
• S ubtraction
• Parentheses can mean any of the following:
• ( ), [ ], or { }
• Even though we say addition before subtraction, they are equals. For example, let’s simplify the following: 8 – 6 + 2. Because subtraction comes first, I do 8-6, which is 2. Then I do 2 + 2, which is 4. 
• The same idea applies to multiplication and division.
• = 3 + 16 – 8
• = 19 – 8
• = 11
• = 36 + 7 – 21
• = 43 – 21
• = 22
• = 5p + (-8p)(6) + 4p
• = 5p + (-48p) + 4p
• = -43p + 4p
• = -39p
• = -4y(2) + 15y
• = -8y + 15y
• = 7y
• **Notice that the variable is in the answer!!!
• The population of purple zebras is currently 200,000, but is decreasing at a rate of 6% each year. Use P = 200000(0.94) t , where P is population and t is time in years, to predict the number of purple zebras left after 25 years.
• Do: P = 200000(0.94) 25
• (I would use my calculator, and round to the nearest whole number)
• There will be approximately 42,582 purple zebras.
• Yadier has a checking account. He started off with \$35, and adds \$20 each week. If
• m = 35 + 20w represents the amount of money, m, in the account after w weeks, find the amount Yadier has after 10 weeks.
• Do: m = 35 + 20(10)
• = 35 + 200
• = 235
• Yadier has \$235 after 10 weeks.