Question

Students should spend 30 minutes or more a day on school work. Which inequality below represents x, how much time students should spend on school work per day?

x > 30
x ≤ 30
x ≥ 30
x < 30

Answer 1

The right inequality that represent the statement is x ≥ 30

Explanation:

If a student should spend 30 minutes or more a day on school work then the inequality that will represent the amount of time the student spend on a school work in terms of x will be x is greater than or equal to 30 minutes.

The value is equal to 30 minutes because the minimum time that the student must spend on school work should be 30 minutes, it shouldn't be less than that.

The value is as well greater than 30 because she spend MORE than 30 minutes a day on the school work. Hence the right inequality that represent the statement is x ≥ 30

Answer 2

x≥30

Explanation:

Inequalities are an inequality between letters (unknowns) and numbers related by arithmetic operations. Its solution set is the set of real numbers that satisfy it.

In other words, an inequality is an algebraic inequality in which its two members are related by means of the signs < (less than), ≤ (less than or equal to), > (greater than) or ≥ (greater than or equal to).

Being x the time students must spend in school work per day, if they must spend 30 minutes or more a day in school work, the inequality that this represents is

x≥ 30

This means that x is greater than or equal to 30, that is, the time students must spend in school work per day is greater than or equal to 30 minutes