The question isn't complete and you might want to ask this in the math section.
But just to help you out, 3x means 3 times whatever "x" is.
Answer: invented something, made discovery’s
Explanation:
Article 3 is the document that made the judicial branch it states “ the judicial power of the United States ,shall be vested in one Supreme Court , and in such inferior courts as the congress may from time to time ordain and establish “
Answer:
The smallest island in the Caribbean from the VI to the ABC islands is Little Cayben