-If one fish is twice as long as another,how do their weights compare?
-If one fish is as heavy as another, how do their lengths compare?
L- 31,33,35,37,39
W- 250,308,363,420,520
as you know,
area varies as the length squared
volume varies as the length cubed.
So, since weight varies as volume,
look for W=kL^3 for some number k. See whether the ratios of L^3 and W are relatively constant.