exam Maths Puzzle Numerical Ability

Graph the system of 5x – 2y < 10, x + 2y > -2, x – y > -4
Where do I begin and how do I graph? I have been having a difficult time with graphing.

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exam Other Question

did i do this right?
rounded 2 decimal places the approximate x intercept of the equation x^3+14.2x^2-4.8x-12.4=0
in standard window
i got 53.44??????????????
-7+6=4a-1+20