Real-Life Inequalities: Graphing and Word Problems

A store sells notebooks for $2 each. If you want to buy at least 5 notebooks, how much money do you need? Write an inequality and graph it on a number line.

• You need at least $10.

• $5

• $20

• $15

Maria has $50 to spend on books. Each book costs $8. Write an inequality to represent how many books she can buy and graph it on a number line.

• b <= 5

• b >= 7

• b <= 6

• b < 6

A class trip costs $120. If each student pays $15, how many students need to pay to cover the cost? Write an inequality and graph it on a number line.

• At least 8 students need to pay.

• At least 5 students need to pay.

• At least 10 students need to pay.

• At least 12 students need to pay.

Tom is saving money for a video game that costs $60. If he saves $5 each week, how many weeks will it take him to save enough? Write an inequality and graph it on a number line.

• 8 weeks

• 10 weeks

• 12 weeks

• 15 weeks

A recipe requires at least 3 cups of flour. If you already have 1 cup, how many more cups do you need to buy? Write an inequality and graph it on a number line.

• You need to buy at least 2 more cups of flour.

• You need to buy exactly 2 cups of flour.

• You need to buy at least 3 more cups of flour.

• You need to buy at least 1 more cup of flour.

A gym membership costs $30 per month. If you want to spend no more than $150, how many months can you afford? Write an inequality and graph it on a number line.

• 5 months

• 3 months

• 4 months

• 6 months

A concert ticket costs $45. If you have $200, how many tickets can you buy? Write an inequality and graph it on a number line.

• 6

• 5

• 3

• 4

A video game costs $50. If you have $20 and earn $10 a week, how many weeks will it take to afford the game? Write an inequality and graph it on a number line.

• 2 weeks

• 3 weeks

• 5 weeks

• 4 weeks

A school fundraiser needs to raise at least $500. If each student raises $25, how many students need to participate? Write an inequality and graph it on a number line.

• At least 10 students need to participate.

• At least 20 students need to participate.

• At least 25 students need to participate.

• At least 15 students need to participate.