The Nevada Supreme Court peppered attorneys on both sides of a business tax initiative Wednesday with questions about how detailed summaries describing petitions need to be to pass legal muster and not confuse voters.The Education Initiative proposal would impose a 2 percent margin tax on businesses making $1 million or more, and supporters say it would provide as much as $800 million a year for schools. It was challenged by Committee to Protect Nevada Jobs, a pro-business group that argues the petition is deceptive because it doesn’t guarantee more funding for education.A lower court judge in October ruled the petition …