The population of the world be in 2030 is 8.6 billion.
Given that,
a. = 6.9 billion
V= 1.1 % = 0. 011
a ) Let An represents The population on year after
2010 .
Population grow rate= 1.1%.
So ,
an = an-1 + an-1 ( 1.1 % )
an = an-1 + an-1 (0. 011 )
an = an- 1 ( 1.011 )
(B)
Given ,
ao = 6.9 billion
an = ( 1 .011 ) an- 1
an = (1 .011 ) an- 1 = (1 .011 ) (1 .011) an - 2 = ( 1 .011) (1 .011 ) an- 3
= ( 1.031 ) 3 ( 1 1018 ) an-4 .. . .
an = ( 1 1 012 ) " - ( 1 012 ) am-n
an = ( 1 .01 1 ) " ap
(ao = 6.9 )
an = 6 .9 ( 1 . 01 1 ) h
Now ,
an = 6 . 9 ( 1 . 0 1 1 ) 2
( means 20 year Later from 2010. )
at 2030
So , n = 20
2 20 = 6.9 ( 1 . 0 11 ) 20
a20 = 609 ( 1. 24 4 580 8428 )
a20 = 8.58 7607815 billion
or
azo = 8.6 billion
( rounded to + decimal place)
Thus, 8.6 billion people will live on Earth in 2030.
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