Expressions
How would you write the following phrase as an expression?
the product of a number y and 6
6y or 6*y
If I have 3 birds and 4 pigs what would my ratio of pigs to birds be?
4:3 or 4 to 3
Which operations are inverses of one another?
Addition, Multiplication, Subtraction, Division
Addition and Subtraction
Multiplication and Division
What property can you use to simplify the following expression?
2 + (8 + x ) Then solve.
Associative Property
(2 + 8) = x
10 + x
What are the four inequality symbols and what do they represent?
< Less Than
> Greater Than
≥ Less than or Equal to
≤ Greater than or Equal to
Identify the terms, coefficients, and constants in the expression 16x+12.
Terms: 16x and 12
Constants: 12
Coefficent: 16
If you have 7 cups of milk and 5 cups of sugar , how many cups of milk would you have if you have 10 cups of sugar?
*Hint: Use a ratio table*
14 cups of milk
7 x 2 = 14
Is 5 a solution to the equation?
x - 3 = 9 Explain how you know?
Find the mean, median, mode, range of the data set: 3, 25, 31, 4, 16, 19, 25.
*Round to the nearest hundredth*
Mean: 123/7 = 17.57
Median: 19
Mode: 25
Range: 28
Is x = 6 a solution to the inequality? State how you know.
4x>36
No
When subistuted 4 x 6 is 24 which is less than 36.
What would the expression be if I combine like terms of the following expression:
6y + 12 - 4y + 3
2y + 15
You earn $24 for washing 6 cars. How much do you earn for washing 5 cars?
24 / 6 = $4 Per 1 car
$4 x 5 = $20 per 5 cars
Identify the independednt and dependent variable in the following:
The equation c=15t represents the cost c (in dollars) of t tickets for a play.
Independent variable: T the tickets
Dependent variable: C Cost of the tickets in dollars
40% of 70 is what number?
40 x 70 = 2800
2800 / 100 = 28
What operation would you use to solve the inequality?
x+8≤14 then solve and graph
Subtraction
x ≤ 6
closed circle on 6 and the arrow points left
Use the Distributive Property to simplify the expression 6(5x-8)
30x - 48
Complete the following equivalent ratios:
Time: 4, 8, 12, 16
Money: 2.5, __ , __, ___
Answer 1: 5
Answer 2: 7.5
Answer 3: 10
Is (2,0) a solution to the equation y=7x+2 ? How do you know?
No because 7 x 2 = 14 plus 2 is 16 not 0!
Order these values from least to greatest:
3/8, .62, 58%
3/8, 58%, .62
Your carry-on bag weighs 22 lbs. It can weigh at most 40 pounds. Write and solve an inequality that represents how much more weight you can add to the bag and still meet the requirement.
22 + w ≤ 40
subtract 22 from both sides so
w ≤ 18
Factor the expression 28x+36 using the GCF.
4 (7x+9)
Using the information. Create a graph.
Time: 10, 20, 30, 40
Distance: 3, 6, 9 ,12
Teacher Will Check!
(10,3), (20,6) (30,9) (40,12)
You and a friend start biking in opposite directions from the same point. You travel 108 feet every 8 seconds. Your friend travels 63 feet every 6 seconds. How far apart are you and your friend after 15 minutes?
15 minutes is 900 seconds
Your speed: 108 feet / 8 seconds is 13.5 feet per second
Your friend's speed: 63 feet / 6 seconds is 10.5 feet per second
times each by 900 to get 12,150 and 9,450 then add for 21,600 feet.
Which equation represents the word sentence? Explain how you know.
The sum of 18 and 5 is equal to 9 less than a number y.
A. 18 − 5 = 9 − y
B. 18 + 5 = 9 − y
C. 18 + 5 = y − 9
D. 18 − 5 = y − 9
C. 18 + 5 = y − 9
Sum represents addition
9 less than means you take 9 away fromy
Solve the inequality 4/5x < 32 and graph the solution on a number line.
Divide both sides by 4/5
32 / 4/5 is 32/1 * 5/4
32 *5 = 160, 160/4 is 40
x<40 open circle on 40 with an arrow to the left