1. Pop Quiz Results
Average: 81%! Well Done!!!

2. Pop Quiz #1 Corrections #1 19 – 7s = -30 - 7s = -30 – 19 - 7s = -49

3. Pop Quiz #1 Corrections #2 n – 1 = -4 13 n = -4 + 1 13 n = -3 13

4. Pop Quiz #1 Corrections #3 5.4 = 3u + 9 5.4 - 9 = 3u -3.6 = 3u

5. Pop Quiz #1 Corrections #4 5c + 7 = -28 5c = -28 – 7 5c = -35

6. Pop Quiz #1 Corrections #5 x + 3 = 9 2 x = 9 - 3 2 x = 6 2 x = 6×2

7. Pop Quiz #1 Corrections BONUS 2b + 4 = 5 3 2b = 5 - 4 3 2b = 1 3

8. Homework Corrections p.116 #5 45 110 3rd rank 192nd rank #6 9 100 2 3#7 4 3 5 7 #9
-25 8
-11 -6
7/4
0.26 24
-2.7

9. ALGEBRA WORD PROBLEMS
TAKE OUT YOUR NOTES!!!

10. How to Solve a Word Problem
Steps to follow:
Step 1 – Find the variable (rank) and the common difference TRICK: it is repeated and usually uses the words every, per, each…
Step 2 – Find the base (constant) number TRICK: it is the item that stays the same
Step 3 – Write the equation
Step 4 – Solve the variable

11. Example 1
Bixi rents bikes for $10 plus $4 per hour. Janice paid $30 to rent a bike. For how many hours did she rent the bike?
Step 1:
The variable: hours (let’s use the symbol h)
The common difference: $4

12. Example 1
Bixi rents bikes for $10 plus $4 per hour. Janice paid $30 to rent a bike. For how many hours did she rent the bike?
Step 2:
The base: $10

13. Example 1
Bixi rents bikes for $10 plus $4 per hour. Janice paid $30 to rent a bike. For how many hours did she rent the bike?
Step 3:
Price = 4h (we don’t put $ signs)
$4 per hour starting price

14. Janice has the bike for 5 hours
Example 1
Bixi rents bikes for $10 plus $4 per hour. Janice paid $30 to rent a bike. For how many hours did she rent the bike?
Step 4:
30 = 4h + 10
= 4h
20 = 4h
20 ÷ 4 = h
5 = h
Janice has the bike for 5 hours
CHECK: 4× = = 30

15. Example 2
Bill spent $39 on a magazine and some candy bars. If the magazine costs $4 and each candy bar costs $5, how many candy bars did he buy?
Step 1:
The variable: Candy bars (let’s use the symbol c)
The common difference: $ (how much each candy costs)

16. Example 2
Bill spent $39 on a magazine and some candy bars. If the magazine costs $4 and each candy bar costs $5, how many candy bars did he buy?
Step 2:
The base: $4 (he only buys one magazine)

17. Example 2
Bill spent $39 on a magazine and some candy bars. If the magazine costs $4 and each candy bar costs $5, how many candy bars did he buy?
Step 3:
Cost = 5c + 4
$5 per candy the magazine

18. Example 2
Bill spent $39 on a magazine and some candy bars. If the magazine costs $4 and each candy bar costs $5, how many candy bars did he buy?
Step 4:
39 = 5c + 4
= 5c
35 = 5c
35 ÷ 5 = c
7 = c
Bill bought 7 candy bars
CHECK: 5×7 + 4 = 35+4 = 39

19. HOMEWORK
WORKSHEET!