3-10. Consider the market for economics textbooks, Explain whether the following events would cause an increase or a decrease in supply or an increase 3-1 or a decrease in the quantity supplied. a. The market price of editorial services increases. b. The market price of economics textbooks increases. c. The number of publishers of economics text 3-18 books increases. d. Publishers expect that the market price of eco- nomies textbooks will incre ext month