To sketch a graph of the demand and supply functions and identify the market equilibrium point, draw a graph with the price on the x-axis and quantity on the y-axis.

Plot the demand function D(p)=50p+1,500D(p)=50p+1,500 and the supply function S(q)=45p20S(q)=45p20, and find the point where they intersect. The intersection point represents the market equilibrium.