Question

Can anyone help?

In 2000, the world population was 6 billion. if the world population is growing at a rate of 1.4% per year, predict the population in 2010? In 2075? And 2120????

Answer 1

`\bf \qquad \textit{Compound Interest Amount} \\\\ A=P\left(1+(r)/(n)\right)^(nt) \qquad \begin{cases} A=\textit{compounded amount}\\ P=\textit{original amount}\to &6E9\\ r=rate\to 1.4\%\to (1.4)/(100)\to &0.014\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{per year, so once} \end{array}\to &1\\ t=years \end{cases}`

now, "t" is years, so for 2010, that'd be t = 10, for 2075, t = 75 and for 2120, yes, you guessed it, t = 120