#### Answer

$\approx 4.005$

#### Work Step by Step

$= \log_5 (630)$
Since the base of the $\log$ function is not $10$, then the change of base formula is required before evaluating by calculator:
$= \frac{\log 630}{\log 5}$
by GDC / calculator
$= 4.0049...$
$\approx 4.005$