i dont understand ---real numbers--- a question is ''name the set or sets of numbers to which the real number belongs'' -75/22

and i dont understand ----''solve the equation then check your solution''

4=-4(d+9) if a=/-2,4,9,0,6,3,1,2,-4/ b=/4,7,20,-8,2,15,12,-5,17/ c=/27,65,37,18,74,14/

d=/-18,-48,-52,12,-36,36/

and the next problem is d-c :mad:

another this i dont understand is what the diffrence between odds and probability like that 2:1 or 1/3 chances

this is one i dont get ''write a direct variable equation that relates x and y. assume that y varies directly as x. then solve.'' If y=-25 x=-5, find y when x=9 :confused:

what is a parrallel box-and-whiskers plot :mad:

i would really really apreciate if anyone would help, my exam is coming and i understand most of everything else. please help :) :)