exam Maths Puzzle Numerical Ability

please help me Perform the indicated operations

3. 2y - 3y[4 - 2(y - 1)]

4. (4x - 3y)2

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exam Other Question

When the problem states "the sum of," I know it means to add, but what does it mean "the sum of the square of a"? And what are the other names for add, subtract, divide & muiltiply? Is there w website that has this inforrmation? A furniture salesperson is normally paid $160 for a 40 hour week. During the week of the sale, his hourly pay was increased 25 percent and he was allowed to work 60 hours. How much did he make during the week of sale?