highway engineers want to improve a dangerous stretch of highway. they expect that it will reduce the risk of someone dying in an accident from 4.1 percent to 1.5 percent over the life of the highway. if a human life is worth $4.2 million, then the project is worth doing as long as it does not cost more than group of answer choices $274,500. $1.6 million. $109,200. $67,200.