Answer
2
Work Step by Step
$Evaluate$ $the$ $expression$ $without$ $using$ $a$ $calculator:$
$\log 25 + \log 4$
Use the First Law of Logarithms: $\log (AB) = \log A + \log B $
$$\log 25 + \log 4 = \log(25\times4)$$
$$\log 100 = \log_{10} 100$$
Rewrite 100 as $10^2$
$$\log_{10} 10^2$$
Use the Third Property of Logarithms: $\log_a a^x =x$
$$\log_{10} 10^2 = 2$$
