An economy has two workers, Paula and Ricardo. Every day they work, Paula can produce 4 computers or 16 shirts, and Ricardo can produce 6 computers or 12 shirts. What is the opportunity cost for Ricardo to produce one shirt?

The Kremerian model on population growth:

a. contradicts the Thomas Malthus claim that higher population growth rate causes poverty. The model suggests that poverty causes population growth, and not the other way around. b. provided additional empirical support to Thomas Malthus' claim that higher population growth rate causes poverty. c. contradicts the Thomas Malthus claim that higher population growth rate causes poverty. The model suggests that world population growth and poverty are completely unrelated. d. contradicts the Thomas Malthus claim that higher population growth rate causes poverty. The model suggests that world population growth is a key driver of advancing economic prosperity.

Contracting for Lawn Mowing Services An apartment owner advertises for lawn mowing services for a number of apartments he owns. He has some idea of the going price and so he advertises that he will pay $100 per month per apartment complex. So why is he disappointed that the winning contractor only provides minimal services?