10- (MPH) Consider the demand lnction for good X given by XUS'XJPYJ) = 200 _ 515x _ 2P? _ 9-21 and assume that 19}, = $5, pi, = $10, and I = $200. 3] Compute the own-price demand curve, crosSrprioe demand curve and Engel curve. b} Determine whether X is a normal good or an inferior good. 1:) Determine whether goods X and Y are gross substitutes or gross complements