Answer:
x = 10000
Step-by-step explanation:
Using the rule of logarithms
[tex]log_{b}[/tex] x = n ⇔ x = [tex]b^{n}[/tex]
Given
log x = 4 ( noting that log x has base 10 ), then
x = [tex]10^{4}[/tex] = 10000
