Question

.

Answer 1

Assuming "log" is the base 10 logarithm, then you have the equation:
\[\frac{ \log(x) }{ \log(10) }=3\]
Now you multiply both sides with log(10):
\[\log(x)=3*\log(10)\]You can rewrite this to: (by using logarithmic terms)
\[\log(x)=\log(10^3)=\log(1000)\]
Now you eliminate log, and get:
\[x=1000\]

Answer 2

You are welcome :)

Answer 3

I can try to help :)