Suppose that in 2015, a typical u. s. student attending a state supported college bought 8 textbooks at a price of $90 per book and enrolled in 28 credit hours of coursework at a price of $400 per credit hour. in 2016, the typical student continued to purchase 8 textbooks and enroll in 28 credit hours, but the price of a textbook rose to $100 per book, and the tuition price increased to $440 per credit hour. the base year for computing a "student price index" using this info is 2015. the price index for any base year is 100. the value of the student price index in 2015 is