Unit 6 Study Guide

Pick the correct letter for:
6 > x

• A
• B
• C
• D

55c + 13 ≤ 75c + 39

• c≤10/13
• c ≥ −13/10
  
• -c>19
• c≤50/80

Solve:
3(x - 2) < 2(x + 9)

• x<24
• x>12
• x<12
• x>24

Solve

• n < 6

• n > 6

• n < 14

• n > 14

• A

• B

• C

• D

Write x > 7 in words.

• x is greater than 7
• x is greater than or equal to 7
• x is less than 7
• x is less than or equal to 7

Write x ≤ 23 in words.

• x is greater than 23
• x is greater than or equal to 23
• x is less than 23
• x is less than or equal to 23

In order to win a food eating contest, a person must eat at least 8 cheeseburgers.  Write the inequality that matches the situation.

Use x as a variable.

Mathematical Equivalence

ON

Johnny earns $15 per hour dog walking. He wants to earn at least $105 to buy a new bike. Which inequality represents how long Johnny needs to work to afford his new bike? 

• 15h ≤ 105
• 15h > 105
• 15h < 105
• 15h ≥ 105

Write an inequality:
Twenty-two more than four times a number is less than 82.

• 22 + 4n ≤ 82
• 22 + 4n > 82
• 82 + 22n ≥ 4
• 22 + 4n < 82