Writing Inequalities
A number n is less than 10
n < 10
x+6 < 12
x < 6
2x + 3 > 9
x > 3
Graph x < 2
open circle at 2, arrow left
You must be at least 13 years old to make a social media account. Write an inequality for the possible ages.
a ≥ 13
A number x is greater than or equal to 4.
x ≥ 4
a-7≥ 3
a≥10
3x - 5 ≤ 10
x ≤ 5
Graph n ≥ -3
closed circle at -3, arrow right
A movie ticket costs $9. You have $45. Write and solve an inequality to find how many tickets you can buy.
9t ≤ 45
t ≤5
The temperature t is no more than 32 degrees.
t ≤ 32
4y≤20
y ≤ 5
4x + 7 ≥ 15
x ≥ 2
Graph y ≤ 5
closed circle at 5, arrow left
You can spend no more than $20 on snacks. each snack costs $2. Write and solve an inequality for how many snacks you can buy.
2s ≤ 20
s ≤ 10
A number y is at least 15.
y ≥ 15
n / 3 > 8
n > 24
5x - 2 < 13
x < 3
Graph p > -1
open circle at 01, arrow right
A rectangle's perimeter must be less than 40 cm. If the length is 12 cm, write an inequality for the possible widths (w).
2 (12+w) < 40
w < 8
Twice a number minus 3 is greater than 9.
2x-3>9
-2x ≥ 10
Don't forget to flip the sign!
x ≤ -5
-3x + 4 ≥ 10
Don't forget to flip the sign!
x ≤ -2
Graph m ≥ 4
closed circle at 4, arrow right
You earn $8 per hour and need at least $100 to buy a new game system. Write and solve an inequality to find how many hours you must work.
8h ≥ 100
h ≥ 12.5