Expressions
4 more than a number.
x + 4
or
4 + x
Solving Equations
Solve for x.
x + 3 = 7
What is:
x = 4
Solving Inequalities
Solve for c.
c - 11 > 22
What is:
c < 33
The identical inequality of x > 23 is 23 < x
True
6+8(3+7)
86
7 less than a number
x - 7
Solving Equations
Solve for x.
2x = 8
What is:
x = 4
What are two possible solutions for x?
2x < 6
x: 0,1, 2
The identical inequality of 6 < m is 6 > m
False
12x9+25
133
Twice a number, x
2x
Solving Equations
Solve for x.
9 + x = 15
What is:
x = 6
Write an inequality
S is at most 55
s <= 55
We use a closed circle to represent the inequalities < and >
False
7+92÷9
16
Half a number, x
x/2
Solve for v.
9v = 27
v= 3
Write an Inequality
Brianna, who is not yet 21 years old, is 2 years older than Lily.
x + 2 < 21
y > 72 is identical to 72 < y
True
32+2(8x2)
41
8 less than twice a number
2x - 8
Solve for r.
r/25 = 5
r = 125
Modeling and Solving Inequalities
Create an inequality to represent the scenario and solve the inequality
Julie earns $7 for each car she washes. This week, she wants to save more than $56. How many cars must she wash?
What is:
7c > 56
Inequalities only have one solution, just like equations.
False. Inequalities have infinitely many solutions.
(28+8)÷6+1
7