College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 4 - Exponential and Logarithmic Functions - Exercise Set 4.5 - Page 504: 5

Answer

in the year 2015 (approximately)

Work Step by Step

$A=1095.4e^{0.014t}$ $1238==1095.4e^{0.014t}\qquad.../\div 1095.4$ $\displaystyle \frac{1238}{1095.4}=e^{0.014t}\qquad...$ take ln( ) on both sides $\displaystyle \ln\frac{1238}{1095.4}=0.014t\qquad.../\div 0.014$ $ t=\displaystyle \frac{\ln\frac{1238}{1095.4}}{0.014}\approx$8.80649331259$\approx$ 9 years (9 years after 2006 =2015) India will have the population of 1238 million approximately in the year 2015
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