during a certain period in the life of an earthworm, it's length, L cm , is directly proportional to the square root of N ,where N is the number of hours after it's birth. one hour after an earthworm is Born, it's length is 2.5 cm.
(1) find an equation connecting L and N .
(2) find the length of an earthworm 4 hours after it's birth.
(3) How long will it take for an earthworm to grow to a length of 15 cm ?
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the earthworm measurement is accurate because more subtracted the beginning and the ending points from the ruler.
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