Marginal Revenue Functions The management of National Electric has determined that the daily marginal revenue function associated with producing and selling their coffeemakers is given by R'(x) = -0.03x + 70 where x denotes the number of units produced and sold and R'(x) is measured in dollars per unit. (a) Determine the revenue function R(x) associated with producing and selling these coffeemakers. (b) What is the demand equation relating the unit price to the quantity of coffeemakers demanded? p=