In 1960 only 5% of the working adults in Carlin City worked
at home. By 1970 the "at-home" work force had increased to
8%. In 1980 there were approximately 15% working at home,
and in 1990 there were 30%. The graph that best illustrates
this is:
The data are $1960 (5\%)$, $1970 (8\%)$, $1980 (15\%)$, and $1990 (30\%)$. Only one of these graphs has the answer and that is choice $\boxed{E}$.