exam Maths Puzzle Numerical Ability

Graph the inequality

y>=1

I do not understand how to begin this problem

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exam Other Question

The ratio of the measures of three angles of a triangle 5:7:8. Find the measure of each angle of the triangle. I have 3 different problems that I am confused about. Please help me. The 1st one is2+3*5square root2-7. #2) (4/2)+4(5-2)square root 2. #3)-8-81/9*2square root 2+7. Can you pleas h