Answer
$1067471$
Work Step by Step
From part a, we have:
$HB=-0.38742t^4+57.9324t^3-1347.23t^2-12735.4t+1385720$
For 1995, $t=15$
Substitute: $HB=-0.38742(15)^4+57.9324(15)^3-1347.23(15)^2-12735.4(15)+1385720\approx1067471$
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