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The given function D(h) represents the distance in miles away from Bloomsfield after traveling for h hours. We need to find the distance left to get to Bloomsfield after 312 hours of traveling, which can be represented as D(312).
Substituting h = 312 into the function D(h) = 440 - 65h, we get:
D(312) = 440 - 65(312)
D(312) = 440 - 20,280
D(312) = -19,840
Therefore, the distance left to get to Bloomsfield after 312 hours of traveling is -19,840 miles.