=+add about $15,000 in contracts. If he purchases the mowers, he could expand his business by $10,000 in a good year or by just $5000 in a bad one. And if he spends nothing, he won’t expand his business. In a bad year, his income would contract by about $1000.

Construct a payoff table and tree diagram for Shawn’s decision. Don’t forget to include his expenses in the calculations.