Posted by **Tony** on Sunday, April 10, 2011 at 8:36pm.

A town has a population of 8400 in 1990. Fifteen years later, its population grew to 12500. Determine the average annual growth rate of this town's population. How do i solve this using applications of exponential functions?

- algebra -
**bobpursley**, Sunday, April 10, 2011 at 8:44pm
12500=8400(R)^15

ln12500=ln8400+15lnR

solve for R

- algebra -
**Tony**, Sunday, April 10, 2011 at 9:11pm
it doesnt work,

the answer is approximately 2.7%

:(

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