book Maths Puzzle Numerical Ability

3x to the 2 power plus 7 subtract 8 plus 4x to the power 2

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book Other Question

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
I am having trouble with this one can someone help Thank you so much!

6x – 0.37 = 5(x – 0.28)