one-step inequality
3≥x-2
5≥x
3x+7>16
x>3
-3x>9
x<-3
-x/6 +1>1
x<-6
What is an inequality?
A comparison between two numbers or values that are not equal to each other and use: <, >, ≤, ≥
3x<9
x<3
x/5 + 1<9
x<40
-x+3≤11
x≥-8
-x+8≤11
x≥-3
When do you use an open circle?
When the inequality has a < or > sign
x/3≤5
x≤15
2x+3≥9
x≥3
-x/2>6
x<-12
2/3x+1<12
x>18
You must be 18 or older to vote. Represent this in an inequality
x≥18
x+7>15
x>8
5x-15>25
x>8
-3x+≥12
x≤-4
-3x+5≥14
x≤-3
Emily is baking cookies for a school event. She wants to bring at least 15 cookies. She has already baked 8 cookies and plans to bake 4 more batches. Solve the inequality to find out how many cookies she needs to bake in each batch to meet her goal.
x≥7/4
x+29<51
x<22
3(x-2)+7≤18
x≤17
-3x<45
x>-15
-5x+12<87
x>-15
Sarah is saving money to buy a new phone. She currently has $120 saved, and she plans to save $10 each week from her allowance. Solve the inequality to find out how many weeks she needs to save to have at least $250 for the new phone.
w≥13