labor for this firm. 3) Assume that the inverse demand curve from construction firms for the services of carpenters is given by PD = 10 - h/20, and the inverse supply curve for carpenter services is given by Ps=h/20, where h is the number of hours of service hired and offered per week. a. Compute the equilibrium price for carpenter services, i.e. the carpenter's equilibrium wage rate. Also compute the equilibrium number hours of carpenter services per week that will be employed. b. Sketch the supply and demand curves, and label the equilibrium price and quantity in your graph