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A company is increasing production of math-brain protein bars at a rate of 100 cases per day. All cases produced can be sold. The daily demand function is given by $$p(x) = 20 – \dfrac{x}{200},$$ where is the number of cases produced and sold, and is in dollars. Find the rate of change of the revenue with respect to the time in days when the daily production is 900 cases.

Which Indigenous nations fought the USA in the Black Hills War of 1876?

The sinking of this US Navy ship was one of the alleged causes of the Spanish-American War:

The United States invaded which country in 2003, under the pretext that said country was developing WMDs (Weapons of Mass Destruction)?

Which one of these people was a founding member of the Black Panther Party?

In which decade did the first people land on the Moon?

The veterans of World War I who marched on Washington DC to claim their bonus certificates early during the Great Depression were known as what?

The Socialist Party of America was founded around the year:

How do you put out a clothing fire? 

What is the density of the metal rod? Show your calculations. Include units in your answer.