exam Maths Puzzle Numerical Ability

Find the horizontal and vertical asymptotes of R(x)= x^3-1/x^3+1

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Solve.
Enter answer as x=a or x=a,b with no spaces. If there is no solution, enter the words no solution
(x)/(x-1)=(2x+10)/(x+11)
Two cars leave towns 230 km apart at the same time, traveling directly toward one another. One car travels 15km per hr slower than the other. They pass one another 2 hours later. What are their speeds?