2. 外语
  3. An antiques dealer bought c antique chairs for a total of x dollars. The dealer sold each chair for y dollars. (a)Write an algeb

An antiques dealer bought c antique chairs for a total of x dollars. The dealer sold each chair for y dollars. (a)Write an algeb

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问题 An antiques dealer bought c antique chairs for a total of x dollars. The dealer sold each chair for y dollars.
(a)Write an algebraic expression for the profit, P, earned from buying and selling the chairs.
(b)Write an algebraic expression for the profit per chair.
选项
答案P = cy - x
解析
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