Whale weight: For a certain species of whale, the relationship between the length of the w...

Whale weight: For a certain species of whale, the relationship between the length of the whale and the weight of the whale can be modeled by the function , where l is the length of the whale in meters and W is the weight of the whale in metric tons (1 metric ton ≈ 2205 pounds). (a) Estimate the weight of a newborn calf that is 6 m long. (b) At 81 metric tons, how long is an average adult?