Select the correct answer. based on this graph, how many apartments are property owners willing to rent out at $520? a line graph between number of apartments and monthly rent in dollars has 3 intersecting lines, supply, equilibrium price and demand. equilibrium price is at 650 dollars, price ceiling at 520 dollars, and price floor at 780 dollars. a. 15 b. 20 c. 25 d. 52 e. 58