a. When three pens and four erasers were purchased, the cost was $21.25. When two pens and two erasers were purchased, the cost was $12.50. What was the the price of a pen and the price of an earaser? b. Solve y = x² +1 and 2y = 3x+4

a. When three pens and four erasers were purchased, the cost was $21.25. When two pens and two erasers were purchased, the cost was $12.50. What was the the price of a pen and the price of an earaser? b. Solve y = x² +1 and 2y = 3x+4

Economics: Private and Public Choice (MindTap Course List)

16th Edition

ISBN:9781305506725

Author:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson

Publisher:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson

Chapter20: Consumer Choice And Elasticity

Section: Chapter Questions

Problem 2CQ

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Question

a. When three pens and four erasers were purchased, the cost was $21.25. When two pens
and two erasers were purchased, the cost was $12.50. What was the the price of a pen and the
price of an earaser?
b. Solve y = x2 +1 and 2y = 3x + 4

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