An antiques dealer bought c antique chairs for a total of x dollars. The dealer

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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. [br]

选项

答案 P = cy - x

解析

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An antiques dealer bought c antique chairs for a total of x dollars. The dealer

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MandyandJordaneachboughtsomenotebooksandathree-ringbinder.Mandypaid

Acardealerreceivedashipmentofcars,halfofwhichwereblack,withtherem

Abbyboughtavasefor$30andthendeterminedasellingpricethatequaledthe

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Thatdealers(i)____enoughtonurtureayoungmodernpainter’scareerratherth

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Youhaveboughtanmp3atashop.Onreachinghome,youdiscoverafaultwit

Youwantedtohaveyourcomputerfixedbythecomputershopyouboughtitfr

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