exam Maths Puzzle Numerical Ability

My niece called with this question? Find the solution of x-3y>2,2x-y<4,and3x+4y>0. They need to find the value of y.

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exam Other Question

Write down the coefficient of the term 4x4y2z in the algebraic expression 4x4y2z - 3x3y2z + 3/2xy3z2. I don't even know what this means. Can someone please help me. ((a^(3/4))+(a^(3/4)))/(a^(1/2))