The average speed of train B ranges from a minimum of 60 miles per hour to a maximum of 90 miles per hour. Which inequality correctly represents all the potential values of the average speed, s, of the train?

Answer Choices

Correct answer marked below

|s – 15| ≥ 75

|s – 15| ≤ 75

|s – 75| < 15

|s – 75| ≤ 15

Correct

|s – 75| ≥ 15

See the full step-by-step explanation

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Track your performance and improve

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Start for free Sign in

Explanation

Preview

Official Explanation

Official

The average speed of train B is at least 60 miles per hour and at most 90 miles per hour. This means that the average speed, s, must satisfy the inequality 60 ≤ s ≤ 90. To…

Read the full explanation

Create free account Sign in

Comments

JaceFeb 13, 2025

Thank you very much!

DangFeb 5, 2025

thankss

ZuzannaNov 9, 2024

Great

What this question tests

What it tests

Your ability to solve absolute-value equations and inequalities by considering both cases.

Common trap

Dropping the absolute value bars entirely or missing that |x| = k has two solutions when k > 0.