Simplify. |-1/2|

a) 2
b) -2
c) -1/2
d) 1/2

30 determine the coefficient on x 12 y 24 x12y24 in ( x 3 + 2 x y 2 + y + 3 ) 18 . (x3+2xy2+y+3)18. (be careful, as x x and y y now appear in multiple terms! )

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7