Assume that the demand curve D(p) given below is the market demand for widgets:

Q=D(p)=89013p, p > 0

Let the market supply of widgets be given by:

Q=S(p)=3+6p, p > 0

where p is the price and Q is the quantity. The functions D(p) and S(p) give the number of widgets demanded and supplied at a given price.

What is the equilibrium price?

What is the equilibrium quantity?

What is the total revenue at equilibrium?