"Ernie and Bert, Inc." sells cookies (good x ₁ ) and bananas (good x ₂ ). They are offering the following deal to their customers. Although the price of bananas is fixed at 1 dollar per unit, the first three cookies that a consumer buys are free. After the third cookie, the price per cookie is also 1 dollar. Cookie Monster's preferences for both goods are represented by u(x ₁ , x ₂ ) = x ₁ (x ₂ + 3) and his income is 5 dollars. 

1. Draw Cookie Monster's budget line. 
2. Find his optimal consumption bundle.