Chapter 1, Equations and Inequalities - 1.1 Apply Properties of Real Numbers - 1.1 Exercises - Problem Solving - Page 8: 59a

Pluto, Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury

Recall, the more negative a number is, the smaller the number is. However, with positive numbers, the number becomes larger as their absolute value increases. Thus, we find the order is: Pluto, Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury