Write the equation of the line tangent to the graph of the following equation at x = 0. y = In (x8 + e) What is the equation of the line tangent to the graph at x = 0? (Type an equation using x as the variable.)40 If the demand equation (in dollars) for a certain commodity is p= In x' , where x represents the number of units of the commodity, determine the marginal revenue function for this commodity, and compute the marginal revenue when x = 40. What is the marginal revenue function for this commodity? R'(X) =] (Use integers or decimals for any numbers in the expression.)