exam Maths Puzzle Numerical Ability

write 3^x=y in log form

I think it should be logx^3=y

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exam Other Question

If U is between T and B, find the value of x and the measure of Line TU.

TU=1-x, UB=4x+17, TB=-3x
6 4w+1=82

4w+1 is an exponent