Weight of a humpback whale The expected weight W (in tons) of a humpback whale can be approximated from its length L (in feet) by using W =1.70L −42.8 for 30 ≤ L ≤ 50.
(a) Estimate the weight of a 40-foot humpback whale.
(b) If the error in estimating the length could be as large as 2 feet, what is the corresponding error for the weight estimate?
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