A series of ascending indifference curves is called

Suppose that your public library charges a fixed monthly membership fee of $12. Members are allowed to check out as many books as they want under this plan. The average member checks out 4 books per month

Suppose that your public library changes its policy. Now each book costs $3 to check out but there is no longer a monthly membership fee. What effect do you think the new policy will have on the total number of books checked out from your library each month? The new policy is likely to ______the number of booked checked out because ________. A) reduce; the marginal benefit of checking out books is now lower under the new policy B) increase; the average benefit of checking out more than 4 books is now higher under the new policy C) reduce; the marginal cost of checking out books is now higher under the new policy D) leave unchanged; members have already shown that they are willing to pay $12 to check out 4 books per month E) leave unchanged; the average cost of the library service is the same under both plans

The data show Argentina's GDP (using purchasing power parity) in billions of dollars

Year 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 GDP($) 182 209 235 255 277 274 294 324 340 333 338 330 300 Year 2003 2004 2005 2006 GDP($) 333 373 420 470 The data show that A) Argentina's economy was in a recession from 2004 through 2006. B) Argentina's economy was in a recession in 2001 and 2002. C) GDP per person more than doubled between 1990 and 2006. D) Argentina's economy reached a peak in 1996.