Q1. The following are some changes that may take place in the market for textbooks. For each of the following, indicate what will happen to either the demand for or the supply of textbooks by listing which curve is affected and then the terms: "shift right or "shift left". An increase in student enrollment at universities across the country A decrease in the price of ink used to print textbooks. A drop in income (textbooks are a normal good). An improvement in the technology used to print textbooks. An increase in college tuition.