exam Maths Puzzle Numerical Ability

Simplify the expression; make sure the answer has no negative exponents:
(6r^-1)^2 (2r^-4) divided by r^-5 (r^2)^-3

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exam Other Question

Joe traveled against the wind in a small plane for 3 hours. The return trip with the wind took 2.8 hours. Find the speed of the wind if the speed of the plane in still air is 180mph. Given f(x)=2x-3/x-1, What are the
x-intercepts
y-intercepts
vertical asymptotes
horizontal asymptotes
slant asyptote

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