## Precalculus: Mathematics for Calculus, 7th Edition

$10^y = x$
$Write$ $the$ $equation$ $in$ $exponential$ $form:$ $\log x = y$ Logarithmic form to exponential form: $\log_b a = c \rightarrow b^c = a$ $$\log x = y \rightarrow \log_{10} x = y$$ Plug in 10 for b, x for a, and y for c $$\log_{10} x = y \rightarrow 10^y = x$$