Science
posted by Nina .
1.The estimated doubling time for the black sea urchin population is approximately 1.5 years. What is the annual growth rate of the urchin?
help please?

growth rate= (finalinitial)/initial *100
so lets consider this urching
N=Original*2^(t/1.5) in one year
N=Original*2^.666=1.59 original
growth rate=(1.591)/1*100= 59 percent per year