Inequalities due 11-8

The temperature in the ice rink must stay below 50°F. This morning, the temperature was 71°F. The ice rink runs a cooling device that can decrease the temperature by 3.5° every hour. Which inequality shows how long it will take for the temperature to fall below 50°F?

• 50 + 3.5x < 71
• 71 - 3.5x < 50
• 71 - 3.5x ≤ 50
• 71 + 3.5x < 50

Tags

CCSS.7.EE.B.3

CCSS.7.EE.B.4

The vet told Casey that her dog should weigh at most 70 lbs. Her dog weighs 106 pounds, so Casey set a goal that he would lose 4 pounds per week. Which inequality represents the number of weeks it take for Casey's dog to reach 70 lbs?

• 106 - 4x ≤ 70
• 70 + 4x ≤ 106
• 4x - 106 ≥ 70
• 106 - 4x< 70

Tags

CCSS.7.EE.B.4B

The members of Carver Middle School's Junior Beta Club need to raise at least $2000 to attend their national convention. They raised $300 with their last fundraiser and decide to host a school talent show to raise the rest. They plan to charge $10 for each ticket. Which inequality shows the number of tickets they must sale to reach their goal?

• 300x + 10 ≥ 2000
• 10x + 300 ≤ 2000
• 10x + 300 > 2000
• 300 + 10x ≥ 2000

Tags

CCSS.7.EE.B.4B

Juan bought a soda for $2. He also bought some nachos for $3 each. Juan did not spend more than $14 on the nachos and the soda. Write an inequality can be used to find n, the number of nachos that Juan could have bought.

• 14≥2n+3
• 2+3n≤14
• 14-3n≤2

Tags

CCSS.7.EE.B.4B

There were no more than 7 players left over after 127 soccer players in a league were divided into 5 teams with b players on each team. Write an inequality that can be used to find b, the number of players on each soccer team.

• 127⁄5b≥ 7
• 127+5b≤ 7
• 7 ≥ 127-5b
• 7 ≥ 127+5⁄b

Tags

CCSS.7.EE.B.4B

Solve
-5m < 10

• m < -2
• m > -2
• m < -50
• m > -50

Tags

CCSS.6.EE.B.8

You flip an inequality symbol when you...

• subtract
• multiply and divide only
• multiple by a negative number
• multiple or divide by a negative number

Tags

CCSS.6.EE.B.8

x/-4 + 2 > 7

• x < -20
• x > -20
• x > 20
• x < 20

Tags

CCSS.7.EE.B.4B

-3y + 2 > 11

• y < -3
• y > -3
• y < 3
• y > 3

Tags

CCSS.7.EE.B.4B

What inequality symbol goes with is at least?

• <

• >

• ≤

• ≥

Tags

CCSS.6.EE.B.8