1. Adele - Rolling in the Deep

5. Ingredients 1 C plus 2 Tbsp warm water 1/3 C oil
2 Tbsp active dry yeast
1/4 C sugar
1 1/2 tsp salt
1 egg
3 1/2 C bread flour
DIRECTIONS:

6. 30-minute rolls

8. Unit 5 – Algebra in Context
Word Wall

9. Perfect Squares …

10. 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 =

11. Solving Quadratic Equations by Finding Square Roots

13. 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

14. 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

15. 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

16. 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.

17. 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

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