The f(x)=2^x and g(x)=f(x+k). If k=-5, what can be concluded about the graph oh g(x).

The graph of g(x) is shifted vertically
a) 5 units above the graph of f(x)
b) 5 units below the graph of f(x)
c) the graph is not shifted vertically from the graph of f(x)

The graph of g(x) is shifted horizontally
a) 5 units to the left of the graph of f(x)
b) 5 units to the right of the graph of f(x)
c) the graph is not shifted horizontally from the graph of f(x)

I NEED HELP it is due today!!!!!!