you are conducting a cost-benefit analysis for a federal highway project. the hourly wage for construction workers on this project is $17.50 per hour. these workers could have earned $12.75 in other jobs in the community and will spend 1 million hours completing the highway project. what is the total labor cost associated with this project? group of answer choices $17.5 million $30.25 million $4.75 million $12.75 million