Question

Please help me with a couple of questions im stuck on these question its just a few questions but I really need help with these :P

1. Given D= [6 0 -3]
[4 3 2]
[5 -8 7]
And E is the addictive inverse of D. what is E?

A. [6 0 3]
[ -4 3 -2]
[-5 -8 -7]

B. [-6 0 3]
[-4 -3 -2]
[5 -8 7 ]

C. [-6 0 3]
[-4 -3 -2]
[-5 8 7]

d. [-6 0 -3]
[4 -3 2]
[-5 8 -7]

2. find the values of the variables
[ 15 8] - [2 5 ] = [ 13 3 ]
[4x 0] [x 3y+6] [12 4y+8]

A. x=-4 and y=2
B. x=5 and y=-1
C. x=4 and y=02
D. x=-5and y=1

3. Given A = [1 -1 2] and B= [-1 -3 2] find AB.
[3 0 5] [2 4 5]
[0 2 -2]

A. [3 -3 -7 ]
[-3 -1 4]

B. [3 3 5]
[-2 6 4]
[1 10 0]

C. [-3 -3 -7]
[-3 1 -4]

D. [3 -3]
[-3 1]
[-7 -4]