Question 73483
Well, with the information provided in the problem, I would assume that there is a direct variation between a shark's weight and its length.  If this is true, we can write a direct proportion: W = kL where: W = shark's weight, L = shark's length, ans k = the proportionality constant.
We can find the value of k from the given information about sharks, W = 2,000 lbs and L = 15 ft. Substituting these values into the equation above:
2000 = k(15) Divide by 15.
k = 133.33...
The final variation can be written:
W = 133.3L
In word...A shark's weight in pounds is 133.3 times its length in feet.