Concepts Covered:
- Inequality Symbols and Their Meanings: <, >, ≤, ≥ represent relationships like "less than," "greater than," "at most," and "at least."
- Translating Words into Inequalities: Phrases like "no more than," "at least," "under," and "greater than" should be translated into appropriate mathematical expressions.
- Strict vs. Non-Strict Inequalities: > and < mean values are not included, whereas ≥ and ≤ mean values are included.
Skills Covered:
- Identify keywords in word problems and correctly translate them into inequalities.
- Determine whether the inequality should be strict or non-strict based on the wording.
Example Problems:
- A cleaning service can clean at most 10 houses per day. Write an inequality for the number of houses cleaned in a day.
- A butterfly must have a body temperature of at least (30°C) to fly. Write an inequality for the butterfly’s temperature.