Question

the number of people who own computers has increased by 23.2 percent annually since 1990. if half a million people owned a computer in 1990, predict how many people will own a coumpter in 2015

Answer 1

There would be at least 92 million people who will own a computer in 2015.

I don't know how to make a function out of a percentage, that is why I used excel to compute annual population.

YEAR POPULATION Increase of previous years population
1990 500,000
1991 616,000 1.232
1992 758,912 1.232
1993 934,978 1.232
1994 1,151,894 1.232
1995 1,419,134 1.232
1996 1,748,373 1.232
1997 2,153,996 1.232
1998 2,653,723 1.232
1999 3,269,387 1.232
2000 4,027,885 1.232
2001 4,962,354 1.232
2002 6,113,620 1.232
2003 7,531,980 1.232
2004 9,279,400 1.232
2005 11,432,221 1.232
2006 14,084,496 1.232
2007 17,352,099 1.232
2008 21,377,786 1.232
2009 26,337,433 1.232
2010 32,447,718 1.232
2011 39,975,588 1.232
2012 49,249,925 1.232
2013 60,675,908 1.232
2014 74,752,718 1.232
2015 92,095,349