500
In a game in which you toss three coins, you win $10 if the coins all match (3 heads or 3 tails) and lose $5 if the coins do not all match. If you play 8 times, how much will you expect to win or lose?
What is losing $10? (would win 10 x 2 = 20, but lose 5 x 6 = 30)