Complete the following table

Question

Growth rate is k, Doubling time is T

Population Growth Rate Doubling time
Country A 1.3% yr ? years
Country B ? yr 33 years

​(Round doubling time to the nearest whole number and round growth rate to the nearest​ tenth.)

Thank you!

Answer 1

1.013^t=2
t*log 1.013=log2
t= log2/log1.013
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ln(2)/ln(1.013)=
53.7 years

b.
(1.+?)^33=2
33ln(1+?)=ln2
ln(1+?)=ln2 /33
?=.022 or 2.2percent