Question

Adina found the sequence below on a discussion board.

10, 3, −4, −11, −18, −25

Identify a1 and complete the recursive rule for An
a1=?
an=?

Answer 1

a1 is the first number in the sequence.

Each term is seven more than the previous one. Verify this yourself.

So, the recursive rule is:

`a_(n) = a_(n-1) + 7`