exam Maths Puzzle Numerical Ability

Find the domain of y=lg(x-1)/(x+1)

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exam Other Question

6x+5x+1=0 The amount of money that Jon spends fishing is dependent upon the average temperature during any month. It varies according to the function:m=5t^3/5+45. If the average temperature last July was 87.45 degrees, how much did Jon spend fishing?