book Maths Puzzle Numerical Ability

I think I have the answer---But not the formula. I've worked on this for days, HELP PLEASE!!!!!!!!!
Alex has four bags weighing 1,2,3 and 4 pounds. To arrange them, he will pic

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book Other Question
How do I find the answer to (4x^2)^3? I hope you understood. it is 4x squared all cubed. Thank-you Please help.
Subtract and write answer in simplest form.

y-2/y+3 - y/2y+6

I am getting y-4/2(y+3)

Is this right?