Review Equations and Inequalities

What inequality does the number line graph represent?

• x ≤ 4

• x ≥ -4

• x < -4

• x < 4

Which situation can be represented by the inequality
15 + 6x ≤ 100?

• Lazer Zone charges $15 plus $6 per person. If Andrea has a maximum of $100 to spend, how many people can Andrea invite to play laser tag?

• Lazer Zone charges $6 plus $15 per person. If Andrea has a maximum of $100 to spend, how many people can Andrea invite to play laser tag?

• Lazer Zone charges $15 plus $6 per person. If Andrea has a minimum of $100 to spend, how many people can Andrea invite to play laser tag?

• Lazer Zone charges $6 plus $15 per person. If Andrea has a minimum of $100 to spend, how many people can Andrea invite to play laser tag?

It costs Amy $0.20 to send a text message.  She has already spent $5 in text messages this month.  If she has a total of $12 that can spend this month on text messages, write and solve an inequality that will give the greatest number of text messages that she can send.

• 0.20x + 5 = 12;
  85 text messages

• 0.20(5x) = 12; 
  12 text messages

• 0.20x + 5 ≤ 12;
  x ≤ 35 

• 0.20x + 5 ≥ 12;
  x ≥ 35

Solve

• A

• B

• C

• D

-8x < 48

• x < -6

• x > -6

• x < 6

• x > 6

10 ≥ x - 3

• x ≤ 13

• x ≥ 13

• x ≤ 7

• x ≥ 7

3x - 2 < 13

• x > 3.67

• x > 5

• x < 5

• x < 3.67

When studying to retake the unit 2 test, I should do the following:

• Make sure that all 3 checkpoints for the unit are done and correct at a level of 2 or better. (Check IC.)

• Look at problems from Chapter 3 (solving equations) and Chapter 4 (solving inequalities)

• Review the notes posted on Google Classroom.

• Persevere. Learning is a process. Never give up!!!

The range is all real numbers​ (a)   and ​ (b)   .

• greater than or equal to -4

• less than or equal to 2

• greater than -4

• less than 2

• No Solution

• x = 15

• All Real Numbers

• x = 0