John Q. Public spends all of his income on gas and burgers. Draw his budget constraint for these products when the following are true: A. Graph A: his income is $80, the cost of a CD is $2 and a cost of a burger is $2.
B. Graph B: his income is $120, the cost of a CD is $2 and the cost of a burger is S2.
C. Graph C: his income is $80, the cost of a CD is $5 and the cost of a burger is $2.
D. Add an indifference curve into graph A. How many CDs and burgers will he buy to be at equilibrium?
E. Add an indifference curve into graph B. How many CDs and burgers will he buy to be at equilibrium?
F. Add an indifference curve into graph C. How many CDs and burgers will he buy to be at equilibrium?
G. Does the equilibrium level of CDs and burgers change due to the changes in income and costs?

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500