calculus
if a population has a growth rate of 5.5% per year, how long to the nearest tenth of a year will it take the population to double?

The answer is 12.6 years
I don't know how to begin to even formulate the problem

Question

calculus
if a population has a growth rate of 5.5% per year, how long to the nearest tenth of a year will it take the population to double?

The answer is 12.6 years
I don't know how to begin to even formulate the problem

anonymous · Answer

In case someone else searches for this answer,the following is how it is worked out.
e^(growth rate times no. years). In this case e^0.055*12.6 = 1.999 rounded to doubling the growth rate. If you wanted to insert a random number, say five, it would be:
5e^0.055*12.6 =  9.999 or rounded to 10.