exam Maths Puzzle Numerical Ability

write each equation in standard form y=7x-5

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exam Other Question

Can you help??? Simply the following:
(3a^2)^-2

and
6x^-2 divided by x^-3

Thanks for helping!!
Given P(A),find P (not A)

P(A)=0.37

Thank You for the straightfoward and correct answers you all send me.