write a rescursive formula for an, the nth term of the sequence 1,-6,-13,-20

Answer 1

To find a recursive formula for the sequence 1, -6, -13, -20, we need to determine the relationship between each term and its previous term.

Looking at the sequence, we can observe that each term is 7 less than the previous term:

1 → -6 → -13 → -20

Therefore, the recursive formula for this sequence is:

an = an-1 - 7

where an represents the nth term of the sequence.