Opportunity cost exists because a. technology is fixed at any ...

[khang]

Opportunity cost exists because
 a. technology is fixed at any point in time
  b. the law of comparative advantage is working
  c. resources are scarce but wants are unlimited
  d. the value of lost opportunities varies from person to person
  e. efficiency is measured by the monetary cost of an activity

Question 2

Moderate exercise is better than none, but excessive exercise is harmful. What is the shape of the graph of health benefits versus hours of exercise per week if health benefits are measured on the vertical axis and exercise is measured on the horizontal axis?
 a. a positively sloped straight line
  b. a negatively sloped straight line
  c. a vertical straight line
  d. a U-shaped curve
  e. a hill-shaped curve

[livaneabi]

Answer to Question 1

C

Answer to Question 2

E

[khang]

Thanks for the timely response, appreciate it

[zacnyjessica]

Wow, this really help