Hey there! I'm happy to help!
To find the area of a circle, you square the radius and then multiply by pi (3.14 in our case).
The radius is half of the diameter.
12.6/2=6.3
We square this.
6.3²=39.69
We multiply by 3.14
39.69×3.14=124.6266
We round to the nearest hundredth, giving us an area of 124.63 in².
Now you can find the area of a circle! Have a wonderful day! :D
Plugging 10 for k in the expression gives us

We simplify this expression to
251 is your answer
We have that if we assume standard exponential growth, the equation of the population will be:

if we start counting from the moment that the population was 7000. We are given that 7000*

=12000, namely that P(5)=12000 and we need to find

. Since e^(10k)=e^(5k)*e^(5k), and since we can solve for e^(5k) from P(5), we have:
e^(5k)=12000/7000 and we can calculate P(10). P(10)=7000

= 20571 people.
The number you are looking for is 995