已知全集,集合
,集合
,则集合
为( )
A.![]() |
B.![]() |
C.![]() |
D.![]() |
某租赁公司拥有汽车100辆,当每辆车的月租金为3000元时,可全部租出;当每辆车的月租金每增加50元时,未租出的车将会增加一辆。租出的车每辆每月需维护费150元,未租出的车每辆每月需要维护费50元。
(1)当每辆车的月租金定为3600元时,能租出多少辆车?
(2)当每辆车的月租金定为多少元时,租赁公司的月收益最大?最大月收益是多少?
A semipro baseball league has teams with 21 players each. League rules state that a player must be paid at least $15,000,and that the total of all players’ salaries for each team cannot exceed $700,000. What is the maximum possible salary,in dollars,for a single player?
A.270,000 | B.385,000 | C.400,000 | D.430,000 E.700,000 |
当0<a<1时,下列不等式成立的是
A.a![]() ![]() |
B.log![]() ![]() |
C.a![]() ![]() |
D.log![]() ![]() |
函数f(x)=log(x-2)+3,a>0,a
1的图像过点(4,
),则a的值为
A.![]() |
B.![]() |
C.4 | D.![]() |
已知a=log0.3,b=2
,c=0.3
,则a,b,c三者的大小关系是
A.a>b>c | B.b>a>c | C.b>c>a | D.c>b>a |