Income per person in the United States is approximately ____ that of Sierra Leone, Malawi, and Niger, three of the world's poorest countries

If the firms in a perfectly competitive market are continually operating where their total costs exceed their total revenue in the short run, then in the long run

a. the number of firms in the market will remain unchanged b. the number of firms in the market will increase c. the number of firms in the market will decrease d. existing firms will increase their plant sizes e. existing firms will increase their output

As a result of the Fed's unconventional purchase of over $1 trillion of mortgage-backed securities in 2009, interest rates on both mortgage-backed securities and home mortgages increased

a. True b. False Indicate whether the statement is true or false