Inequalities

Question 1

Find the student’s error in solving the following inequality.31 < –5x + 6 25 < –5x –5 < x

Revolt · Accepted Answer

The student should have switched the direction of the inequality sign to get –5> x for a final answer.

Question 2

Find the student’s error in solving the following inequality.2 x > –5/3

Revolt · Accepted Answer

The student should have added 4 to all parts (left, middle, and right) to get 6 < –3x < 9.

Question 3

Which answer choice is a solution to the inequality ?

Revolt · Accepted Answer

1.5

Question 4

Solve the inequality, then identify the graph of the solution.2x – 1 > x + 2

Revolt · Accepted Answer

mc001-2.jpg

Question 5

Identify the graph of the inequality 2(2x – 1) + 7 < 13 or –2x + 5 –10.

Revolt · Accepted Answer

mc001-4.jpg

Question 6

Briyana has $150, and she needs to save at least $560 for a spring break trip. If she can save $45 per week, how long will it take her to save enough money? Let w = weeks saving money. Write an inequality to describe the situation.

Revolt · Accepted Answer

45w + 150 560

Question 7

Which numbers are solutions to the inequality 2x – 1 > x + 2? Check all of the boxes that apply.

Revolt · Accepted Answer

4; 5

Question 8

What is the fewest number of full weeks Briyana would have to work to have enough money?

Revolt · Accepted Answer

10 weeks

Question 9

Which of the following is the solution set of the problem?

Revolt · Accepted Answer

(–, –3]

Inequalities Answers

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