Which recursive formula can be used to generate the sequence below, where f(1) = 6 and n ≥ 1?6, 1, –4, –9, –14, …

Each term is 5 less than the term before it: 1 − 6 = −5, −4 − 1 = −5, and the later differences are also −5. Therefore, starting with f(1) = 6, the recursive rule is f(n + 1) = f(n) − 5, which is choice B.

AI-written and checked against the verified answer.