Answer:
31,607
Explanation:
This question is based on a table enlisting the number of tax returns, receipts, and net income by type of business, as reported by the United States Internal Revenue Service. According to the table, in 2008 there were 22,614 sole nonfarm proprietorships, 3,146 partnerships, and 5,857 corporations. The sum of all these ownerships is 31,607.
