SATog3道数学题,
thetotaldailycostc,indollars,ofproducingxunitsofacertainprductisgivenbythefunctionc(x)5(600x-200)/x1k,wherekisaconstantandx#100.if20unitswereprducudyesterdayforatotalcostof$5640,whatisthevalueof怎么也看不懂这个函数和一些符号啊~
any2pointdeterminealine.ifthereare6pointinaplain,no3ofwhichlieonthesameline.howmanylinesaredeterminedbypairsofthese6point?
onasquaregameboardthatisdivededintonrowsofnsquareseach.kofthesesquaresliealongtheboudaryofthegameboard.whichofthefollowingisapossiblevaluefor
A10
B25
C34
D42
E52
3道题比较多,有会的牛人帮下忙哈,实在是解不出来~
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