Suppose the demand for tickets to an amusement park can be estimated by the function D(p) = -25p2 + 63,075 where p is the price for one ticket. a) Find the elasticity of demand, E. b) If the price is $25 per ticket, calculate the elasticity. Is the demand elastic or inelastic? Will an increase in price result in an increase in total revenue? Find the equation of the tangent line at the given point on the curve given below. In(x2 + y2) = In 5x +- -2; (1,2) (Hint: you will have to take the derivative implicitely)