Wat is the answer from leaat to greatest by -0.3 0.5 0.55 -0.35

Which statement describes the term economics? a. it is the study of using limited resources to fulfill wants and needs. b. it is the study of how governments fulfill the wants and needs of nations. c. it is the study of how people spend their money to fulfill wants and needs.

What is the range for 31,39,29,34,37,24,36,33,34,28

Which one ? is the answer and how to find this answer