What is the simplified form of each expression?
1).
A) 1
B) 0
C) -5.1
D)-1

2). 3g^-2 b^2
A) 3b^2/b^2
B) 3g^2 b^-2
C) 3gb^-4
D) b^2/3g^2

3). 3/g^-2 h^3
A) 3/g^2 h^3
B) 3g^2/h^3
C) 6^g/h^3
D) 3/gh

4). What was the value of 2x^-2y^-2 for x=3 and y= -2
A) 1/18
B) 72
C) 2(-6)^-4
D) 1/648

5). What was the value of 1/2^-2 x^-3 y^5 for x=2 & y= -4
A) 16
B) -4
C) -1/32
D) -16