Final answer:
Carole and Todd played 1 game.
Step-by-step explanation:
To find out how many games Carole and Todd played, we can use the information given in the question. We know that Carole won 3 games and lost a total of $2. Since they bet $1 per game, we can say that Carole won $3 and lost $2. The difference between the amount Carole won and lost is $3 - $2 = $1.
Therefore, Carole and Todd played a total of 1 game.