Which of the following statements about economic models is correct? a. Economic models are built to mirror reality exactly. b. Economic models are useful, but they should not be used for the purpose of improving public policies. c. Because economic models omit many details, they allow us to see what is truly important. d. Economic models seldom incorporate equations or diagrams.

The third program provides families with $50 in food stamps each week, redeemable for both perishable and nonperishable food. the fourth policy instead provides a family with a box of nonperishable foods each week, worth $50. use two graphs to illustrate that a family may be indifferent between the two programs, but will never prefer the $50 box of nonperishable foods over the $50 in food stamps. state your answer and use a consumer choice model for perishable food and nonperishable food to graphically justify your choice.