The population density of smallville (15 square miles) was 18.5 people per square mile. a decade later populations increased to 26.8 people per square mile. what was the increase in population?

i think the answer is b)

step-by-step explanation:

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x