exam Maths Puzzle Numerical Ability

Solve
0.79(9x+9) >= 2.2-(x+3)

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exam Other Question

Find all real or imaginary solutions to this equation:

x^-2-9x^-1+18=0

I am no sure really where to start whether I should square the entire problem or what I am stumped. Please help!! I need to convert 38 yards per second to miles per hour.

I know that 1 yard = .9144mi but am having trouble converting!

Thanks