The size of the united states doubled as a result of the louisiana purchase in 1803. this purchase included land that eventually became many states, including the state of a. nebraska (ne) b. florida (fl) c. oregon (or) d. texas (tx)

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: (