Which country began a slow change from a command economy to a market economy in the 1990s?
a. ethiopia
c. eritrea
b. somalia
d. rwanda

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: (