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

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

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter9: Systems Of Linear Equations

Section9.5: Multiplication With The Addition-or-subtraction Method

Problem 5ST

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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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