Which statement best models the equation below? −7+7=0 Responses A girl earned $7 per hour working 7 hours. A girl earned $7 per hour working 7 hours. A train backed up 7 feet and then moved forward 7 feet. A train backed up 7 feet and then moved forward 7 feet. A cup contained 7 ounces of water after 7 ounces were poured out from the cup. A cup contained 7 ounces of water after 7 ounces were poured out from the cup. A person walked 7 feet forward, stopped, and then walked another 7 feet forward.