Is this microeconomic or macroeconomic?
1. "More workers are being hired by the nation's businesses."
2. "The U.S economy imported more goods and services than it exported last year."
3. "New discoveries in medicine are lading to strong growth in the biotech industry."
3. Comment on the statement from an opportunity cost perspective: "The main cost of going to college is the $15,000 per year in tuition." Suppose that a person could have earned $30,000 a year if the person did not go to college.