Which sequence could be partially defined by the recursive formula f (n 1) = f(n) 2.5 for n ≥ 1? 2.5, 6.25, 15.625, 39.0625, … 2.5, 5, 10, 20 â€"10, â€"7.5, â€"5, â€"2.5, … â€"10, â€"25, 62.5, 156.25