Question 897825

Log 4 + Log 32= 7log2
i need an explanation in how to solve this WITHOUT a calculator 
<pre>
log 4 + log 32
{{{log 2^2 + log 2^5}}}
{{{2 log 2 + 5 log 2}}}____{{{highlight_green(7 log 2)}}}____{{{highlight_green(log 2^7)}}}____{{{highlight_green(log 128)}}}