To find the distance left to get to Bloomsfield after 312 hours of traveling using the function \( D(h) = 440 - 65h \), we need to substitute \( h = 312 \) into the equation.
Now, we calculate:
\[ D(312) = 440 - 65 \times 312 \]
First, we calculate \( 65 \times 312 \):
\[ 65 \times 312 = 20280 \]
Now we substitute this back into the distance function:
\[ D(312) = 440 - 20280 \]
Now we calculate:
\[ D(312) = 440 - 20280 = -19840 \]
Since a negative distance does not make sense in this context, it indicates that after 312 hours of traveling, you have already passed Bloomsfield by 19840 miles.
Thus, the distance left to get to Bloomsfield is \(-19840\) miles, which suggests you are well past the city. However, if you need the absolute value of the distance past Bloomsfield, that is:
\[ 19840 \text{ miles} \]
In decimal form, that's simply:
\[ 19840.0 \]
So the response is 19840.0 miles (indicating that you are 19840 miles past Bloomsfield).