To find the distance left to get to Bloomsfield after traveling for 3.5 hours, we can use the function \( D(h) = 440 - 65h \).
Substituting \( h = 3.5 \) into the function:
\[ D(3.5) = 440 - 65 \times 3.5 \]
First, calculate \( 65 \times 3.5 \):
\[ 65 \times 3.5 = 227.5 \]
Now, substitute this value back into the distance function:
\[ D(3.5) = 440 - 227.5 \]
\[ D(3.5) = 212.5 \]
Thus, the distance left to get to Bloomsfield after 3.5 hours of traveling is \( \boxed{212.5} \) miles.