book Maths Puzzle Numerical Ability

I have two questions I am stuck on these problems and how to graph them.
y>3 and the other problem is 4x+y is greater than or equal to 4.
I appreciate the help
thank you very m

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book Other Question

An apple weighs 160grams. 85% of the apple is water. How many grams of water are there in the apple? What is the difference between (-16)^(5/4) and -16^(5/4)?