## Thinking Mathematically (6th Edition)

$3000, -3000, 3000, -3000, 3000, -3000$
Write the first six terms by multiplying by the common ratio $-1$ to get the next term, starting at 3000. $3000, -3000, 3000, -3000, 3000, -3000$ Because we are multiplying by a negative, the terms alternate between negative and positive.