有图,相当于送分1:某宾馆有100间客房,每间定价180¥时,全满.当定价增加10¥时,就会有5间空的 Q:设某天每间客房定价增加X¥,宾馆会收入Y¥,求X与Y的解析式2:如图,矩形ABCD中,点E.F分别在AB,AC
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