D(x) is the price, in dollars per unit, that consumers are willing to pay for x units of an item, and S(x) is the price, in dollars per unit, that producers are willing to accept for x units. Find (a) the equibibrium point, (b) the consumer surplus at the equilbrium point, and (c) the producer surplus at the equilibrium point D(x)=(x7)2,S(x)=x2+2x+1 (a) What are the coordinates of the equilibrium point? (Type an ordered pair)