Greta starts using a new baking technique, and she can now do twice as much of
everything. In a single day Greta can now make 10 cakes or 8 pies, rather than the 5
cakes and 4 pies she could previously bake. Greta’s production possibility frontier has
_____, but her opportunity costs of making pies _____.
A) shifted right; are unchanged
B) shifted right; have decreased
C) not changed; have increased
D) not changed; have decreased
An inferior good is one for which a(n) _____ in buyers’ income causes a(n) _____.
A) increase; increase in demand
B) increase; increase in quantity demanded
C) increase; decrease in demand
D) decrease; decrease in demand