For many species of fish, the weight W is a function of the length L that can be expressed by
W = W(L) = kL3 ........... k = constant
Suppose that for a particular species k = 0.03 and that for this species, the length (in centimeters) is a function of the number of years t the fish has been alive and that this function is given by
L = L(t) = 65 - 0.1(t - 25)2 .......... 0 ( t ( 25
Find (W ◦ L)(t) in order to express W as a function of the age t of the fish?