Peter and Candace are given the arithmetic sequence

Peter wrote the explicit formula .

Candance wrote the explicit formula .

Consider peters explicit formula for the sequence .

First, find the common difference.

The common difference is and .

The common difference is .

Next, substitute and into the formula for the term of an arithmetic sequence.

Therefore, which is candace explicit formula.

Therefore, candace explicit formula is the simplified form of peters explicit formula .

Therefore both candace and peter are correct.

Both candace and peter are correct.