配套习题- 实际应用与二次函数（2） -【青果学院】

挑战习题

1/5单选题

难度：

1.将进货单价为70元的某种商品按零售价100元/个售出时每天能卖出20个，若这种商品的零售价在一定范围内每降价1元，其日销售量就增加1个，为了获得最大利润，则应降价（　　）

A	5元
B	10元
C	15元
D	20元

提示1：: 6K6+5bqU6ZmN5Lu3eOWFg++8jOihqOekuuWHuuWIqea2pueahOWFs+ezu+W8j+S4uu+8iDIwK3jvvInvvIgxMDAteC03MO+8iT0teDxzdXA+Mjwvc3VwPisxMHgrNjAw77yM5qC55o2u5LqM5qyh5Ye95pWw55qE5pyA5YC86Zeu6aKY5rGC5b6X5pyA5aSn5Yip5ram5pe2eOeahOWAvOWNs+WPr++8jg==

正确答案：QQ==

6Kej77ya6K6+5bqU6ZmN5Lu3eOWFg++8jDxicj7liJnvvIgyMCt477yJ77yIMTAwLXgtNzDvvIk9LXg8c3VwPjI8L3N1cD4rMTB4KzYwMD0t77yIeC0177yJPHN1cD4yPC9zdXA+KzYyNe+8jDxicj7iiLUtMe+8nDA8YnI+4oi05b2TeD015YWD5pe277yM5LqM5qyh5Ye95pWw5pyJ5pyA5aSn5YC877yOPGJyPuKItOS4uuS6huiOt+W+l+acgOWkp+WIqea2pu+8jOWImeW6lOmZjeS7tzXlhYPvvI48YnI+5pWF6YCJQe+8jg==

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2/5单选题

难度：

2.某公司在甲、乙两地同时销售某种品牌的汽车．已知在甲、乙两地的销售利润y（单位：万元）与销售量x（单位：辆）之间分别满足：y₁=-x²+10x，y₂=2x，若该公司在甲，乙两地共销售15辆该品牌的汽车，则能获得的最大利润为（　　）

A	30万元
B	40万元
C	45万元
D	46万元

提示1：: 6aaW5YWI5qC55o2u6aKY5oSP5b6X5Ye65oC75Yip5ram5LiOeOS5i+mXtOeahOWHveaVsOWFs+ezu+W8j++8jOi/m+iAjOaxguWHuuacgOWAvOWNs+WPr++8jg==

正确答案：RA==

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3/5单选题

难度：

3.某产品进货单价为90元，按100元一件出售时，能售出500件．若每件涨价1元，则销售量就减少10件．则该产品能获得的最大利润为（　　）

A	5000元
B	8000元
C	9000元
D	10000元

提示1：: 6K6+5ZSu5Lu35Li65q+P5LiqeOWFg++8jOWImeavj+S4quWIqea2puS4uu+8iHgtOTDvvInvvIzplIDllK7ph4/kuLo1MDAtMTDvvIh4LTEwMO+8ie+8jOagueaNru+8muavj+S4quWIqea2psOX6ZSA5ZSu6YePPeaAu+WIqea2pu+8jOWPr+W+l+WHulflhbPkuo5455qE5LqM5qyh5Ye95pWw77yM5Yip55So6YWN5pa55rOV5rGC5pyA5YC85Y2z5Y+v

正确答案：Qw==

6Kej77ya6K6+5Y2V5Lu35a6a5Li6eO+8jOaAu+WIqea2puS4ulfvvIw8YnI+5YiZ5Y+v5b6X6ZSA6YeP5Li677yaNTAwLTEw77yIeC0xMDDvvInvvIzljZXku7bliKnmtqbkuLrvvJrvvIh4LTkw77yJ77yMPGJyPueUsemimOaEj+W+l++8jFc977yIeC05MO+8iVs1MDAtMTDvvIh4LTEwMO+8iV09LTEweDIrMjQwMHgtMTM1MDAwPS0xMO+8iHgtMTIw77yJPHN1cD4yPC9zdXA+KzkwMDDvvIw8YnI+5pWF5Y+v5b6X5b2TeD0xMjDml7bvvIxX5Y+W5b6X5pyA5aSn77yM5Li6OTAwMOWFg++8jDxicj7mlYXpgIlD77yO

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4/5单选题

难度：

4.某种商品的成本是120元，试销阶段每件商品的售价x（元）与产品的销售量y（件）满足当x=130时，y=70，当x=150时，y=50，且y是x的一次函数，为了获得最大利润S（元），每件产品的销售价应定为（　　）

A	160元
B	180元
C	140元
D	200元

提示1：: 5oqKeD0xMzDml7bvvIx5PTcw77yM5b2TeD0xNTDml7bvvIx5PTUw77yM5Luj5YWl5LiA5Ye95pWw6Kej5p6Q5byPeT1reCti77yM6L+b6ICM5b6X5Ye6eeS4jnjnmoTlhbPns7vlvI/vvJsg

提示2：: 5Yip55So5Yip5ramPemUgOmHj8OX5q+P5Lu25Yip5ram77yM6L+b6ICM5Yip55So6YWN5pa55rOV5rGC5Ye65Ye95pWw5pyA5YC877yO

正确答案：QQ==

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5/5单选题

难度：

5.生产季节性产品的企业，当它的产品无利润时就会及时停产，现有一生产季节性产品的企业，一年中获得利润y与月份n之间的函数关系式是y=-n²+15n-36，那么该企业一年中应停产的月份是（　　）

A	1月，2月
B	1月，2月，3月
C	3月，12月
D	1月，2月，3月，12月

提示1：: 5rGC5Ye65Yip5ram5Li6MOaXtm7nmoTlgLzvvIzljbPku6R5PTDvvIzliJktbjxzdXA+Mjwvc3VwPisxNW4tMzY9MO+8jOino+aWueeoi+W+l+WIsG48c3ViPjE8L3N1Yj49M++8jG48c3ViPjI8L3N1Yj49MTLvvIzmiYDku6Uz5pyI5ZKMMTLmnIjopoHlgZzkuqfvvIwg

提示2：: 54S25ZCO5qC55o2u5LqM5qyh5Ye95pWw55qE5oCn6LSo5b6X5Yiw5oqb54mp57q/5byA5Y+j5ZCR5LiL77yM5YiZbj0x5ZKMbj0y5pe277yMee+8nDDvvIzkuo7mmK/lvpfliLDor6XkvIHkuJrkuIDlubTkuK3lupTlgZzkuqfnmoTmnIjku73ov5jmnInmmK8x5pyI77yMMuaciO+8jg==

正确答案：RA==

6Kej77ya5LukeT0w77yM5YiZLW48c3VwPjI8L3N1cD4rMTVuLTM2PTDvvIw8YnI+4oi0bjxzdXA+Mjwvc3VwPi0xNW4rMzY9MO+8jDxicj7iiLTvvIhuLTPvvInvvIhuLTEy77yJPTDvvIw8YnI+4oi0bjxzdWI+MTwvc3ViPj0z77yMbjxzdWI+Mjwvc3ViPj0xMu+8jDxicj7iiLVhPS0x77ycMO+8jDxicj7iiLTmipvniannur/lvIDlj6PlkJHkuIvvvIw8YnI+4oi0bj0x5ZKMbj0y5pe277yMee+8nDDvvIw8YnI+4oi06K+l5LyB5Lia5LiA5bm05Lit5bqU5YGc5Lqn55qE5pyI5Lu95pivMeaciO+8jDLmnIjvvIwz5pyI77yMMTLmnIjvvI48YnI+5pWF6YCJRO+8jg==

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