For the multiple regression model Y=40,000+15000X1+2000X2, where Y is future income, X1 is a durnmy variable representing whether or not at least one parent attended collego (if yes, it takes the value of 1 , and 0 if not), and X2 represents years of secondary sehooling of the indlvidual. What is the expected income of an individual whose mother, but not father, attended college, and who thereselves have 5 years of secondary schooling? 50,000 70,000 65,000 Cannet be determined