exam Maths Puzzle Numerical Ability

I need help with this problem. I think i know what i am doing but i am insecure. I need to know if this problem is even, odd, or neither.

f(x)= x + |X|

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exam Other Question

Transpose this augmented matrix:
[ 1 8 7 9 ]
[ 0 2 5 1 ]
[-4 -1 0 17]
Could I please get assistance with the following problem:

Find the determinant of:
-4 0
1 3
the numbers are enclosed with vertical lines.

Thank You