In what way was the feudal system like the roman empire?

a: both were based on cooperation between rich and poor.

b: both emphasized education for all.

c: both centralized the european government.

d: both provided structure to people’s lives.

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: (