Answer
please see image
(graph of g(x) is red)
.
Work Step by Step
Refer to Table 2.4 (page 279):
Horizontally stretch the graph of f(x) by factor 2.
... dividing by $\displaystyle \frac{1}{2}$ is multiplying by 2...
.. for each (x,y) on the graph of f(x),
plot ($2x, y$) on the graph of g(x)