1. Licensing information
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Author: Kevin Hall
Wording for the legal statement above is adapted from the legal statement for Trigonometry, published in 2009 by The CK-12 Foundation:

2. Today’s lesson is brought to you by the
letter
N n

3. 1). Dre has $5 more than Diamonique. If n represents
Diamonique’s money, Please represent Dre’s.
Diamonique
Dre n
n + 5
2). Joselyn has twice as many M&M’s as Jeffrey. If Jeffrey
has n M&M’s, how many M&M’s do they have
altogether?
Jeffrey
Joselyn
TOTAL n 2n
n + 2n 3n

4. total
(like 11, 13, and 15)
3). The sum of three consecutive odd numbers is 435.
What are the numbers?
1st Number
2nd Number
3rd Number n
n + 2
n + 4
n + n n + 4 = 435
Now just solve the equation.
The point was how to set it up.
Let’s solve it together.

5. total
(like 11, 13, and 15)
3). The sum of three consecutive odd numbers is 435.
What are the numbers?
1st Number
2nd Number
3rd Number n
n + 2
n + 4
=143
=145
=147
n + n n + 4 = 435 3n
+ 6
= 435
- 6
- 6 3n
= 429
The 3 numbers are
143, 145, and 147 3 3 n
= 143

6. P. 112, #3 The instructions at the top of the page say,
“For Exercises 1–6, draw the next figure. Complete a table and find the function rule. Then find the 35th term.”

7. P. 112, #3 The instructions at the top of the page say,
“For Exercises 1–6, draw the next figure. Complete a table and find the function rule. Then find the 35th term.” 1 2 3 4 5 … n … 35

8. p. 112, #3.
“For Exercises 1–6, draw the next figure. Complete a table and find the function rule. Then find the 35th term.”
How many diagonals can you draw from one vertex in a polygon with 35 sides?
# of sides
# of diagonals 1 2 3 4 5 … n 35

9. Some friends form a Facebook group and start posting on each others’ walls.
If everyone posts twice per day on everyone’s wall (including their own), how many total posts will be made per day?
Step 1: Try it with simple examples
1 Person
2 People
3 People
Writes
__ posts
Writes
__ posts
Writes
4 posts
Writes
__ posts
Writes
6 posts
Writes
6 posts 2 4 6
TOTAL: 2
TOTAL:
TOTAL:
(4)(2)
(6)(3)

10. 1 Person 2 People 3 People Writes __ posts Writes __ posts Writes4 6
TOTAL: 2
TOTAL:
TOTAL:
(4)(2)
(6)(3)
Step 2: Look for a pattern in the answers. If there are n people…
TOTAL:

11. Let’s look quickly at the investigation.

12. Image credits:
Sesame Street picture is in the public domain. Downloaded from Wikimedia on 10/16/10: