A craft vendor must sell at least $300 worth of merchandise to make a profit. Scarves sell for $10 each and hats sell for $20 each. She expects to sell at least 20 items. The lines on the graph represent the situation in which she makes a profit.

You roll a fair die. if you get a number greater than 4, you win $80. if not, you get to roll again. if you get a number greater than 4 the second time, you win $20. otherwise you win nothing. create a probability model for the amount you win at this game.