exam Maths Puzzle Numerical Ability

Solve 6(|n|- 3)- 4|n|+5=11

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exam Other Question

A college student pays $280 for a three hour course. How much would he have to pay for a class load of 16 hours? Round your answer to the nearest whole dollar. Be sure to put a dollar sign ($) on your answer.__________ Please help! It asks to solve by completing the square, the problem is:
x^2-x-1=0, please and Thank you=)