Question

9. During a certain period in the life of an earthworm,
its length, L cm, is directly proportional to the
square root of N, where N is the number of hours
after its birth. One hour after an earthworm is born,
its length is 2.5 cm.
(1) Find an equation connecting L and N.
(ii) Find the length of an earthworm 4 hours after
its birth
(iii) How long will it take for an earthworm to grow
to a length of 15 cm
tell the answer of all 3 parts​

Answer 1

Answer:

2.5 . into 4

15/3

5 into 37.5

187.5