exam Maths Puzzle Numerical Ability

Here T defined by .Find a vector “x” whose image under T is b, and determines whether x is unique.
A=1 -3 2
0 1 -4
3 -5 -9
b= 6
-7
-9

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exam Other Question
A glass blower can form 8 simple vases of 2 elaborate vases in an hour. In a work shift of no more than 8 hours, the worker must form at least 40 vases.
Question 1: Let s represe solve t=1/4n+40
and show work or explain it please.. thank you.