Answer
$14$% of the college students anticipated a starting salary of $\$40$ thousand.
Work Step by Step
In order to determine the estimation of the percentage of students who anticipated a starting salary of $\$40$ thousand, determine the $y-$coordinate of the point whose $x-$coordinate is $\$40$ .
Since the graph has a scale on $4$% per square unit on the $y-$axis, and the point lies in the middle of $12$% and $16$% $y-$coordinate, thus:
The midpoint of $12$% and $16$% is,
$\begin{align}
& \frac{12+16}{2}=\frac{28}{2} \\
& =14
\end{align}$
Therefore,
The $y-$coordinate of the point becomes $14$% .
Therefore, $14$% of the college students anticipated a starting salary of $\$40$ thousand.