Answer:
27
Step-by-step explanation:
18 divided by 2/3
Unrecursively, that's
A quadratic will have a linear first difference:
So we get
f(1) = 4
f(n+1) = f(n) + 8n + 4
Divide them
We'd get
2n^2+1/10n + 1
Divide 315,530,612 by 3,539,225 to get 89 people per square mile (rounded)