2010, the United States had about ___ percent of the world's population and produced about ___ percent of the world output

Ad valorem taxation

A) refers to the personal income tax. B) is used to tax goods but not services. C) is assessed by charging a tax rate as a fraction of the market price of a good. D) is a tax that is applied only to cigarettes and alcohol.

You would expect that your firm is experiencing decreasing returns to scale if

a. Long run average costs increase with output b. Long run average costs decrease with output c. Long run average costs are constant with respect to output d. None of the above