Ricardo consumes two goods, apples and hot dogs. Draw his budget line for each of the following cases: 

a. Price of apples = $1, price of hot dogs = $2, income = $10. 

b. Price of apples = $2, price of hot dogs = $2, income = $10. 

c. Price of apples = $2, price of hot dogs = $2, income = $18. 

d. Price of apples = $1, price of hot dogs = $2, income = $20. 

e. Price of apples = $2, price of hot dogs = $4, income = $20; compare to part a.