exam Maths Puzzle Numerical Ability

Business and finance. The cost for a long-distance telephone call is $0.36 for the first minute and $0.21 for each additional minute or portion therefore. Write an inequality rep

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multiply then put in lowest terms....... i got this far now im not sure what to do?

2x+2/(x+4)(x-1) times (x+4)(x-2)/2x-4 For all x>0 and y>0, the radical expression: square root of 3 divided by 3 times the square root of x minus the square root of y.