5. Income Effect & Substitution Effect - (Use budget line with energy drink on the y-axis, and popcorn on the x-axis). If Annie's hourly income remains $180. The price of popcorn is on sale and price drops to $3 a bag, while the price of a six-pack of can energy drink remains at $4. The original price of popcorn was $6 and original price of energy drink was $4. The previous question states that utility is maximized at 20 bags of popcorn. Given this information, draw the budget lines and their indifference curves.