1.
Simplify
A.
B.
C.
D.
Hint
2.
Simplify
A.
B.
C.
D.
Hint
3.
For what value(s) of
x
is
undefined?
A.
–1
B.
7, –1
C.
6
D.
6, 7
Hint
4.
Simplify
.
A.
B.
C.
D.
Hint
5.
Assuming that
, determine whether
is
sometimes
,
always
, or
never
true.
A.
never
B.
sometimes
C.
cannot be determined from given information
D.
always
Hint
, determine whether 
is sometimes, always, or never true.