The assassination of archduke franz ferdinand from this country was the spark that ignited a series of defense alliances that led to ww i.
a. germany
c. russia
b. italy
d. austria-hungary

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: (