exam Maths Puzzle Numerical Ability

Find the product:
[3 -1]
0 4] [2 -1 3]
2 1] [0 -2 4]



Find the product:
[3 -7] [0 -4
[1 2] [5 -3]

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exam Other Question

TRANSFORMATIONS THE ABSOLUTE-VALUE FUNCTION CAN BE USED TO REFLECT A PORTION OF THE GRAPH OF G ACROSS THE X-AXIS BY USING COMPOSITION. GIVEN F(X)=(ABSOLUTE VALUE OF X) AND G(X)=X simplify:

(3x^3-1+9x) + (3 + 3x)

I have 4 answers to choose from:

a)x^2-x+4 r11
b)x^2+2x r-7
c)x^2+2x r5
d)x^2-x+4 r-13