Sydney earns $100 from his YouTube videos each week; he spends it all on concert tickets and paintball. 

a. If concert tickets cost $20 each and paintball admission is $10 per session, graph Sydney’s budget constraint.

b. Suppose Sydney’s YouTube haul increases to $200 per week. Graph Sydney’s new budget constraint.

c. Suppose Sydney’s YouTube income remains steady at $100, but the price of concert tickets decreases to $10 and the price of paintball to $5. Graph Sydney’s new budget constraint.

d. Is there a fundamental difference between a doubling of income and a halving of prices? Explain.

e. Would there be a difference in feasible bundles if the price of concert tickets was cut to $10, but the price of paintball remained the same?