Incorrect Question 2 0 f 1 Pts Solve the problem. At a certain copy center, the cost y (in dollars} of purchasing x thousand printed cards can be approximated by xy+y=60ic Use implicit differentiation to nd and interpret a! when x =1 and y=3a % = 15 means that additional cards will cost approximately $15.00 each. 3': = 30 means that ordering an additional thousand cards will cost approximately $15.00 more. 9: dx = 15 means that ordering an additional thousand cards will cost approximately $15.00 more. 3-: = 30 means that ordering an additional 30 cards will cost $1000.00 more