Q20 (1 point) The current market demand for product X is given by Q = 19 P, where P is price-perunit in dollars. Suppose that the willingness-to-pay for X goes up by $1 at every unit. Use the new demand to calculate the consumer-surplus if the price is $10 per unit. What is this consumer surplus? (Hint: you may nd it helpful to plot the original demand and then apply the increase in willingnesstopay). Numerical