One Step Inequalities

An unknown number decreased by 9 is at most 25. What is the number?

• x - 9 ≤ 25

• x - 9 < 25

• x - 9 > 25

Your brother has $2,000 saved for a vacation. His airplane ticket is $637. Which inequality can be used to find out how much he can spend on everything else?

• 637 + x ≤ 2000

• x − 637 ≤ 2000

• 637 + x ≥ 2000

• x − 637 < 2000

• d≥59
• d≤69
• d≥49
• d<58

x≥65 x≤151 x>65 x≥151

• x≥65

• x≤151

• x>65

• x≥151

Amira wrote the inequality p + 5 ≤ 18. Which situation is best represented by this inequality?

• Amira spent 18 minutes making p phone calls. Each call was at least 5 minutes long.

• Amira removed 18 marbles from a bag of p marbles. Afterwards, there were at least 5 marbles in the bag.

• Amira placed p pieces of paper in 18 stacks. Each sack had a most 5 pieces of paper.

• After Amira added 5 books to a stack of p books, there were no more than 18 books in the stack.

26 < p + 28

• p > -2

• p < -2

• p < 54

• p > 54

-8x < 48

• x < -6

• x > -6

• x < 6

• x > 6

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

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

Pick the correct letter for:
6 > x

• A

• B

• C

• D