exam Maths Puzzle Numerical Ability

What is ((x^2-4)/(5x))*(30/(3x-6))?
I got (30x^2+2)/(8x) but its wrong?
Thanks!

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exam Other Question

Could someone please tell me where I am going wrong? I keep getting -21 and -3 but the answer is (-00, -3) and (10, 00). Thank You.

Solve the inequality:

x+21/x+3 <2 An employee who produces x units per hour earns an hourly wage of y = 0.55x + 8 (in dollars). Find the hourly wage for an employee who produces 9 units per hour.