Question

You can model the population of a certain city between the years 1955 and 2000 by the radical function P(x)=55000 sqrt x-1945 . Using this model, in what year was the population of that city 275,000?

Answer 1

\[275000=55000\sqrt{x-1945}\]

Answer 2

Wait the 1945 is under the radical too right

Answer 3

yes

Answer 4

Ok, divide both sides by 55000

\[5=\sqrt{x-1945}\]

Answer 5

square both sides

5^2=x-1945

Answer 6

add 1945

1970=x

Answer 7

Wut

Answer 8

1970?

Answer 9

Yes

Answer 10

thx