Which of these is a group of producers working together to raise prices and increase profits?
A. a trading bloc
B. a cartel
C. defense contractors
D. a labor union

You are given the first four terms of an arithmetic sequence. why might you use a recursive formula? why might you use an explicit formula? under what conditions might a recursive formula be preferred over the explicit formula? under what conditions might an explicit formula be preferred over the recursive formula? pleasss ! sorry if it's a long question: (