Math 110 Course Resources - Marginal Analysis & Elasticity Course Packet on marginal analysis The daily cost (in dollars) of producing Samsung VR headsets is given by C(x) = 2500 + 700x2 + 5x3 where x denotes the number of headsets produced in a day and the total revenue in dollars is given by R(x) = 7000x - 20x2 Using the marginal average profit function, P'(x), approximate the marginal average profit when 5 headsets have been produced and sold