Question

Which exponential equation is equivalent to the logarithmic equation below? log 478= a

Answer 1

$\hbox{if } \log_x y=z \hbox{ then } x^z=y \\ \\ \log 478=a \\ \downarrow \\ \log_{10} 478=a \\ \Downarrow \\ \boxed{10^a=478}$

The answer is A.