exam Maths Puzzle Numerical Ability

How do you work these problems? I have no Idea where to start! Help!

Solve and graph the solution:

-12 is greater than or equal to 24x

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exam Other Question

I am really confused at the following question. I am not sure how to even start. Please help :)

Please create a linear equation based on the following numbers and please graph 13) Solve: Simplify your answers type an exact answer using radicals as needed rationalize all denominators . use a comma to separate is needed, or type N if there is no solution.