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The followingequation describes the Nike’s monthly demand for visits to the health club: Qd= 30 – 5P, where Qd is visits per month and P is dollar per visit.
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A.18: h+ [& i" r/ O) y
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B.106 D6 s, l5 ?8 v% g2 V
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C.65" n4 o$ }6 R. k3 q$ Q
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答案和详解，登录后回复可见：
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发表于 2015-12-22 13:46:18
发表于 2019-3-31 12:23:51
