Read the list and answer the question. Contributions to Mathematics:
• Developed algebra
• Extended knowledge of trigonometry
• Spread the concept of zero to Europe
Which region is credited with these mathematic contributions?
Western Europe
East Asia
O North America
O Middle East

Whether or not a given study has the possibility of causing harm to participants:

After having your fifteenth candy bar we can assess that you would have? a. negative utility b. high utility c. low utility d. a sixteenth candy bar

In the kingdom of saudi arabia the government controls every aspect of oil production which makes up the majority of the country's economy. while other businesses are owned by individuals, the biggest segment of saudi arabia's economy is oil production. saudi arabia's economy would best be described as a) entirely market. b) almost entirely command. c) a mixture between just market and traditional. d) a mixed economy with large amounts of command.