The graph shows a point of equilibrium. A graph titled Daily Market for Graphic Tees at the Clothing Shop has Quantity supplied on the x-axis, from 0 to 50 in increments of 10, and price in dollars on the y-axis, from 0 to 18 in increments of 2. A line that represents supply has a positive slope and a line that represents demand has a negative slope. The lines intersect at point (30, 9).

What is the price at which equilibrium is achieved?