exam Maths Puzzle Numerical Ability

help please
solve the rational inequality (x-2)/(x+3) is less than or equal to 0

is it: (-3,2] (-oo,-3) (-oo,-3)U{2,oo) or [2,oo)
i am very confused

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exam Other Question

can you give three examples of something you do, that process using a polynomial?

I can give the examples of somethhing we would possibly use them, but not sure how to confidently answer this question, and need some assistance. Thanks
Use a table of values to graph f(x) and g(x) on the same set of axes.
f(x) = 2^3x and g(x) = 8^-x
I am having difficulty with picking the x values what x values would be suitab