Solutions to One-Step Inequalities

Solve
(n/3) > -20 

• n > 60

• n < -17

• n > -60

• n < -23

How would you solve this inequality?
m - 9 ≤ 20

• By adding 20 to both sides

• By subtracting 9 to both sides

• By adding 9 to both sides

• By subtracting 20 to both sides

1.8m ≥ -5.4

• m ≥ -3

• m ≤ -3

• m ≥ -9.72

• m ≤ -9.72

Level 3.

Solve the inequality. Graph the solution.

y+5 ≥ 2

• 
• 
• 
• 

Which number line shows the solution set to the inequality below? x - 3 > -3

• A

• B

• C

• D

A chef has 7 pounds of potatoes.  She needs more than 14 pounds for dinner.  What inequality describes the amount of potatoes the chef needs to buy?

• x - 7 > 14

• x + 7 > 14

• x - 7 < 14

• x + 7 < 14

When do we switch the inequality symbol?

• when multiplying or dividing by a NEGATIVE

• when adding and subtracting a NEGATIVE

• we never switch the inequality

• When there is a negative in the problem

What are two solutions to x < 8?

• 8.6, 7.9

• 11, 16

• 0.8, 5.9

• 12, 7.1