exam Maths Puzzle Numerical Ability

A company finds that if it produces and sells q units of a product, its total sales revenue in dollars is 100 times the square root of q. If the variavle cost per unit is $2 and th

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1) simplify...squareroot 9b^3-squareroot 25b^3.
2) simplify...(squareroot x-3)2.
3) simplify...squareroot14squareroot35. A person invested $10,000. The greater part is invested at 6% and the remainder at 5%. The annual income from the greater part is $160 more than the annual income from the smaller