exam Maths Puzzle Numerical Ability

Let R(x)=x+1/x-1. If T(x) = R(x)+1, Then T(x)=
a)2x/x+1
b)x+2/x+1
c)x+2/x-1
d)2x/x-1

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exam Other Question

what is the equation for the coordinates (1,2) and (2,4) What is the range of the function : -2(y-4)=5(^x+2) ? I think it is y such that y is greater than 4.