exam Maths Puzzle Numerical Ability

I cannot figure out how to solve this logarithm equation

log(8x)=7.9+log(1.25)

Please help.

xandra

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exam Other Question

Can you please help me with these radicals. I have to simplify or reduce.
a) ^3 sq. rt. 24x^5y^3
b) sq.rt. 3 over 8
c) sq. rt. 12 + sq.rt. 108
d) ^3 sq.rt. of 16 * ^3 sq.rt. o Add 10c-1 and 4c-1