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The owners of Phoenix Flames football team won different amounts of stock in the franchise, so when they vote on an issue they have different amounts of voting power. Assume that Alvarez’s and Cianci’s votes each will count twice, Belardo’s will be counted three times, Devlin’s four times, and Espinoza’s once. In order for a motion to be passed, the vote must be a total voting weight of at least nine. How many different subsets of this group of owners have a voting weight of at least nine?
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