exam Maths Puzzle Numerical Ability

I need help with this problem [x-8]+5>=11. I don't understand what I am supposed to do. Please show me step by step.

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exam Other Question

I need to verify ( ( x+2) (x-1) (2x-7)) these factos to see if they are corret either through long division or synthetic division. Suppose you toss a coin and roll a die. What is the probability that you toss heads and roll a 4?