In 2007, the world's population reached 6.7 billion and was increasing at a rate of 1.2% per year. Assume that this growth rate remains constant. (In fact,the growth rate has decreased since 1987.)
(a) Write a formula for the world population as a function of the number of years since 2007. (Note: Use the general exponential function.)
(b) Use your formula to estimate the population of the world in the year 2032. Round your answer to two decimal places.
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Suppose \(n=2007\) and \(r\) is the number or years sense then..

\[
a_{2007} = 6.7
\]\[
a_{2007+r} = (0.012)^r6.7
\]

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