SOLUTION: The population of the world in 1995 was 5.7 billion people. The observes population growth rate was 3% per year. Assuming the growth rate doesn't change, what will the population b

Question 308608: The population of the world in 1995 was 5.7 billion people. The observes population growth rate was 3% per year. Assuming the growth rate doesn't change, what will the population be in the year 2034? In what year will the world's population have tripled? The predicted sustainable population of the earth is 22.5 billion people. When will Earth have too many people?
I don't if you need a formula of some type so I'm a little stumped.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
Population for year "Y" ___ P = (5.7 billion) (1 + .03)^(Y - 1995)

1st question ___ plug in 2034 for Y ___ solve for P

2nd question ___ plug in (3 * 5.7 billion) for P ___ solve for Y using logarithms

3rd question ___ like 2nd except plug in 22.5 billion for P
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