Answer: Demand for hamburgers will shift
Step-by-step explanation:
Demand curve is the relationship between the price of the product and the quantity of the products demanded in a given time. The price of the product and demand for products are inversely related to each other.
When the price of the product increases the demand for the product decreases which shifts the demand curve. When there is a sale of hamburger buns the price of the product decreases and the quantity demanded increases. The demand curve is a graphical representation of price per unit and quantity demanded.