Making Inequalities True

r - 14 ≥ 17

• r ≥ 3

• r ≥ -31

• r ≥ 31

• r ≥ -3

8x < 48

• x < -6

• x > -6

• x < 6

• x > 6

Pick the correct inequality.

• A

• B

• C

• D

Solve

• z≤1

• z>9

• z≤9

• z<9

You must be at least 48 inches tall to ride the bumper cars.

• h < 48

• h > 48

• h ≤ 48

• h ≥ 48

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 is the correct inequality for the following sentence?

Swim practice will be no more than 35 laps. 

• p ≤ 35

• p = 35

• p > 35 

• p< 35

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

Monica wants to spend at most $40 at the county fair. Entrance to the fair costs $15. She can spend d dollars on other things at the fair. Which inequality can be used to find the possible values of d?

• d − 15 > 40

• d − 15 < 40

• d + 15 ≥ 40

• d + 15 ≤ 40

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.