Suppose that an economic consultant for X Corp. recently provided the firm’s marketing manager with this estimate of the demand function for the firm’s product: 〖_〗^=12,000−3_+4_−1+2_ Question: How many of good X will consumers purchase when _=$200 per unit, _=$15 per unit, =$10,000 and _=2,000 ( )? Are goods X and Y substitutes or complements? Is good X a normal or an inferior good?