The number of sandwiches that would be supplied by this market if the price were $3.50 is: 675
How to Interpret the Supply Curve?
A supply curve is defined as a graphical representation of the relationship between the price of a good or service and the quantity supplied for a given period of time. The supply curve typically shows that as the price of a good increases, the quantity of goods supplied also increases.
We want to find out the number of sandwiches that would be supplied by this market if the price were $3.50.
From the graph, we see that the number of sandwiches that would be supplied by this market if the price were $3.50 is:
(650 + 700)/2 = 675