1. 7.2 Solving Word Problems with Equations
Wednesday, February 20, 2019
Chapter 7 – Day 3
7.2 Solving Word Problems with Equations
7.2 WS
2) Please sit in TESTING rows (for our retake)
3) Grab a quarter sheet from the back and solve and check the following equation:

2. Warm Up: Solutions
𝑓−22= 𝑓 =36
𝑓−22=14
36−22=14
14=14

3. Check HW

4. 2/15 Solve Equations by Predicting 96
Date Title Page
2/15 Ch 5A Revisited
2/15 Solve Equations by Predicting
2/ Notes: Solving Equations by + or
2/19 Ch 5A Revisited
2/ HW
2/19 Ch 5B Test
2/ HW Extra Practice
2/ Notes: Word Problems

5. Ch 5A Retake
For students who received under 80% on their test (under 28/35)
Ms. Ross will periodically come around at check off problems that are CORRECT
Once Ms. Ross writes a grade on top, turn retake in to the back
Homework
For students who received 80% or above (28/35 or over)
If you finish the worksheet early, work on the ODD problems

6. 102
7.2 Notes: Word Problems /20

7. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.

8. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.
Let h be

9. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.
Let h be the height of the desk

10. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.
Let h be the height of the desk
ℎ+11=41

11. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.
Let h be the height of the desk
ℎ+11=41
−11−11
ℎ =30

12. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.
Let h be the height of the desk
ℎ+11=41
Check: ℎ+11=41
−11−11
30+11=41
ℎ =30
41=41

13. The height of a desk is 11 inches shorter than the height of a 41 inch chair. Write and solve an equation to find the height of the desk.
Let h be the height of the desk
ℎ+11=41
Check: ℎ+11=41
−11−11
30+11=41
ℎ =30
41=41
The desk is 30 inches tall.

14. The advertised price of a cell phone is $149 after a $50 mail-in rebate. Write and solve an equation to find the price of the cell phone before the rebate is applied.

15. The advertised price of a cell phone is $149 after a $50 mail-in rebate. Write and solve an equation to find the price of the cell phone before the rebate is applied.
Let p be the price of the cell phone before the rebate

16. The advertised price of a cell phone is $149 after a $50 mail-in rebate. Write and solve an equation to find the price of the cell phone before the rebate is applied.
Let p be the price of the cell phone before the rebate
p−50=149

17. The advertised price of a cell phone is $149 after a $50 mail-in rebate. Write and solve an equation to find the price of the cell phone before the rebate is applied.
Let p be the price of the cell phone before the rebate
p−50=149
p =199

18. The advertised price of a cell phone is $149 after a $50 mail-in rebate. Write and solve an equation to find the price of the cell phone before the rebate is applied.
Let p be the price of the cell phone before the rebate
p−50=149
Check: p−50=149
199−50=149
p =199
149=149

19. The advertised price of a cell phone is $149 after a $50 mail-in rebate. Write and solve an equation to find the price of the cell phone before the rebate is applied.
Let p be the price of the cell phone before the rebate
p−50=149
Check: p−50=149
199−50=149
p =199
149=149
The cell phone costs $199 before the rebate.

20. ON YOUR OWN: The Florida Panther has an average height of 30 inches
ON YOUR OWN: The Florida Panther has an average height of 30 inches. It is 20 inches taller than the Northern Mockingbird. Write and solve an equation to find the average height of the Northern Mockingbird.

21. ON YOUR OWN: The Florida Panther has an average height of 30 inches
ON YOUR OWN: The Florida Panther has an average height of 30 inches. It is 20 inches taller than the Northern Mockingbird. Write and solve an equation to find the average height of the Northern Mockingbird.
Let h be the average height of the Northern Mockingbird
30=20+ℎ
Check: =20+ℎ
−20−20
30=20+10
10= ℎ
30=30
h=10
The average height of the Northern Mockingbird is 10 inches.

22. Wrap Up When solving a word problem, what must you write first?
After solving an equation, what must you do?
How do you write your answer to a word problem?
State three examples of variables.
State two examples of constants.
State one example of a term.
What is the difference between an equation and an expression?
What does it mean to isolate a variable?

23. HW: TB306 #32-34 all, 46-48 all (submit online) 2/20
103
HW: TB306 #32-34 all, all (submit online) 2/20