20) suppose that julia receives a $20 gift card for the local coffee shop, where she only
buys lattes and muffins. if the price of a latte is $4 and the price of a muffin is $2, then
we can conclude that julia:
a.should only buy muffins.
b.should only buy lattes.
c.can buy 5 lattes or 10 muffins if she chooses to buy only one of the two goods.
d.can buy 5 lattes and 10 muffins with her $20 gift card.
21) which of the following is correct?
a.if the demand for a product is inelastic, a change in price will cause total revenue to
change in the opposite direction.
b.if the demand for a product is inelastic, a change in price will cause total revenue to
change in the same direction.
c.if the demand for a product is inelastic, a change in price may cause total revenue to
change in either the opposite or the same direction.
d.the price elasticity coefficient applies to demand, but not to supply.
22) to economists, the main difference between the short run and the long run is that:
a.the law of diminishing returns applies in the long run, but not in the short run.
b.in the long run all resources are variable, while in the short run at least one resource is
fixed.
c.fixed costs are more important to decision making in the long run than they are in the
short run.
d.in the short run all resources are fixed, while in the long run all resources are variable.
23) Explain the difference between an equilibrium level of GDP and a level of GDP
which is in disequilibrium.