exam Maths Puzzle Numerical Ability

Mrs. Bernado owed 670 pesos on her bank credit card. She charged another item costing 1,070 pesos. Find the amount that Mrs. Bernado owed the bank.

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exam Other Question

Graph the solution set of each of the following inequalities

x > 4
i need help solving this:
(x-radical y-z)-(x+radical y-z)-(radical y+z-x)