1. Adele - Rolling in the Deep
ELTON JOHN - The One
Adele - Rolling in the Deep

5. Ingredients 2 cans (14.5 oz each) French-style green beans, drained 1can (10 3/4 oz) condensed cream of mushroom soup ¼ cup milk 1can (2.8 oz) French-fried onions

6. Green Bean Casserole

8. Unit 5 – Algebra in Context
Word Wall

9. Perfect Squares …

10. Square Numbers
1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 = 25
6 x 6 = 36
7 x 7 = 49
8 x 8 = 64
9 x 9 = 81
10 x 10 = 100
11 x 11 = 121
12 x 12 = 144
13 x 13 = 169
14 x 14 = 196
15 x 15 = 225

11. Square Numbers
1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 =
6 x 6 = 36
7 x 7 = 49
8 x 8 = 64
9 x 9 = 81
10 x 10 = 100
11 x 11 =
12 x 12 = 144
13 x 13 = 169
14 x 14 = 196
15 x 15 = 225

12. Square Numbers
1 x 1 = 1
2 x 2 =
3 x 3 = 9
4 x 4 = 16
5 x 5 =
6 x 6 = 36
7 x 7 = 49
8 x 8 =
9 x 9 = 81
10 x 10 = 100
11 x 11 =
12 x 12 = 144
13 x 13 =
14 x 14 = 196
15 x 15 =

13. Square Numbers
1 x 1 = 1
2 x 2 =
3 x 3 = 9
4 x 4 = 16
5 x 5 =
6 x 6 = 36
7 x 7 =
8 x 8 =
9 x 9 = 81
10 x 10 = 100
11 x 11 =
12 x 12 = 144
13 x 13 =
14 x 14 =
15 x 15 =

14. Activity: Identify the following numbers as perfect squares or not.16 15
146
300
324
729

15. Solving Quadratic Equations by Finding Square Roots

16. What is a square root?
Since 32 = 9, √9 = 3
Since 132 = 169, √169 = 13

17. Find the square root

18. Simplify each

20. Solving quadratics Solve each equation.
a. x2=4 b. x2=5 c. x2=0 d. x2=-1
x2=4 has two solutions, x = 2, x = -2
x2=5 has two solutions, x =√5, x =- √5
x2=0 has one solution, x = 0
x2=-1 has no real solution

21. Solve by rewriting equation
Solve 3x2 – 48 = 0
3x2 – =
3x2 = 48
3x2 / 3 = 48 / 3
x2 = 16
After taking square root of both sides,
x = ± 4

22. Equation of a falling object
When an object is dropped, the speed with which it falls continues to increase. Ignoring air resistance, its height h can be approximated by the falling object model.
h is the height in feet above the ground
t is the number of seconds the object has been falling
s is the initial height from which the object was dropped

23. Application
An engineering student is in an “egg dropping contest.” The goal is to create a container for an egg so it can be dropped from a height of 32 feet without breaking the egg. To the nearest tenth of a second, about how long will it take for the egg’s container to hit the ground? Assume there is no air resistance.

24. The question asks to find the time it takes for the container to hit the ground.
Initial height (s) = 32 feet
Height when its ground (h) = 0 feet
Time it takes to hit ground (t) = unknown

25. Substitute
0 = -16t2 + 32
= -16t – 32
-32 = -16t2
-32 / -16 = -16t2 / -16
2 = t2
t = √2 seconds or approx. 1.4 seconds