For a firm producing in a perfectly competitive industry the demand is O unitary elastic O perfectly inelastic O relatively elastic O perfectly elastic Question 4 1 pts Suppose the demand function for a product is Q = 20 - 2 P. The inverse demand function of this demand function is O P = 10 - 2Q O P = 10+1/2Q O P = 40 - 2Q O P = 10 - 1/2