Question 316242
{{{f(x) = log(2,(x+4))}}}
{{{ y = log(2,(x+4))}}}
{{{2^y = x+4}}}
Let x = 0
{{{2^y = 4}}}
{{{2^y = 2^2}}}
{{{y = 2}}} 
one intercept is (0,2)

{{{2^y = x+4}}}
{{{2^0 = x+4}}}
{{{1 = x+4}}}
{{{x = -3}}}
another intercept is (-3,0)

See this for a plot 
http://www.wolframalpha.com/input/?i=log2%28x%2B4%29