Solving One-Variable Inequalities

Question 1

Which interval is the solution set to 0.35x – 4.8 < 5.2 – 0.9x?

Revolt · Accepted Answer

B: (–∞, 8)

Question 2

Which number line represents the solution to 2.5 – 1.2x < 6.5 – 3.2x?

Revolt · Accepted Answer

C:

Question 3

Which student’s first step was incorrect, and why?

Revolt · Accepted Answer

B: Luis’s, because he flipped the inequality sign when he subtracted

Question 4

Which represents the solution set to the inequality ?

Revolt · Accepted Answer

D: (–∞, ]

Question 5

Which of the x values are solutions to the inequality 4(2 – x) > –2x – 3(4x + 1)? Check all that apply. x = –1.1x = –2.2x = 0x = –10x = 10

Revolt · Accepted Answer

C: x = 0; E: x = 10

Question 6

What is the solution to (x + 8) > (2x + 10)?

Revolt · Accepted Answer

C: (–∞, 4)

Question 7

✔ x > –1.25x < –1.25x > –0.8x < –0.8

Revolt · Accepted Answer

A: ✔ x > –1.25

Question 8

Question 8

Revolt · Accepted Answer

The inequality that will determine the number of months, x, that are required for the second phone to be less expensive is .: 100 + 55x > 150 + 51x; The solution to the inequality is .: x > 12.5; Sal’s mother would have to keep the second cell phone plan for at least months in order for it to be less expensive.: 13

Question 9

✔ 100 + 55x > 150 + 51x100 + 55x < 150 + 51x100x+ 55 > 150x+ 51100x+ 55 < 150x+ 51

Revolt · Accepted Answer

A: ✔ 100 + 55x > 150 + 51x

Question 10

x > 2.4x < 2.4x < 12.5✔ x > 12.5

Revolt · Accepted Answer

D: ✔ x > 12.5

Solving One-Variable Inequalities Answers

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