# Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.5 - Inequalities, Compound Inequalities, and Problem Solving - Problem Set 4.5: 38

The solution set is {x|x $\geq$ 3} , or [3, $\infty$) in interval notation.

#### Work Step by Step

We use the properties of inequalities to solve this inequality. x $\geq$ 2.1 + 0.3x x - 0.3x $\geq$ 2.1 0.7x $\geq$ 2.1 Divide both sides by 0.7 to obtain: x $\geq$ 3 The solution set is {x|x $\geq$ 3} , or [3, $\infty$) in interval notation.

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