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Coryn and Leah are working on homework problems that involve arithmetic sequences. Coryn wrote down and from one sequence, and Leah had and for a different sequence. Write an equation for each sequence.

The second term of Coryn's sequence is and the third term is .

You need to know how much is being added and the 'zeroth term' in order to write the equation.

Leah's sequence is a little more difficult.
This is the order of her sequence