math help PLEASE been out for a while?

1.f(x)=x^2-6 what is the range of the function when domain is {0,1,2,3}
a)-6,-4,-2,0 b)-6,-5,-2,3 c)-3,-2,-1,0 d)0,1,2,3

2.solution to this equation lx+1l=2
a)x= -3 or x=1 b)x=-1 or x=1 c)x=1 or x=3 d) x=3 or x=-3

3.the first six terms of a sequence are shown [ -162 54 -18 6 -2 2/3 ] what is the 10th term of the sequence?
a) -2/59049 b)-2/729 c)2/19683 d)2/243