I need help with every question.

CHAPTER ONE Q1. What determines whether a resource is scarce or not? Why is the concept of scarcity important to the definition of economics? Q4. The owner of a small pizzeria is deciding whether to increase the radius of delivery area by one mile. What considerations must be taken into account if such a decision is to increase profitability? ( HINT: use the marginal concept) Q9. According to the text, economics majors on average make more money than most other majors and have more job opportunities. Are these the primary motivations one might have for studying economics? What are your motivations for studying economics? CHAPTER TWO Q2. You can spend spring break either working at home for $80 per day for five days or go to Florida for the week. If you stay home, your expenses will total about $100. If you go to Florida, the airfare, hotel, food, and miscellaneous expenses will total about $700. What's your opportunity cost of going to Florida? Q8. Determine whether each of the following would cause the national economy's PPF to shift inward, outward, or not at all: 1. An increase in average length of annual vacations 2. An increase in immigration 3. A decrease in the average retirement age 4. The migration of skilled workers to other countries Q9. The United States is best described as having a mixed economy. What are some elements of command in the U.S. economy? What are some market elements