The population of a community is known to increase at a rate proportional to the number of people present at time t. If an initial population P0 has doubled in 7 years, how long will it take to triple

It will take 11.10 year to triple the population

Step-by-step explanation:

We have given that initial population is

It is given that population is doubled in 7 years

So

r = 10.40 %

So rate of increasing the population will be 10.40 %

Now we have to find the time in which population is 3 times

So new population

So

Taking log both side

n = 11.10 year

So it will take 11.10 year to triple the population

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.