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steffanie_0831
Help? A.1970 B.1966 C.1964 D.1975
You can model the population of a certain city between the years 1955 and 2000 by the radical function |dw:1356762048525:dw|Using this model, in what year was the population of that city 275,000? (1 point)
275000=5500 sqrt {x-1945}\[275000=5500 \sqrt{x-1945}\] square both sides
\[\frac{ 275000 }{ 5500 }=\sqrt{x-1945}=50\]
here p(x)=275,000 so 275,000=5500*sqrt(x-1945) or sqrt(x-1945)=275000/55000
or(x-1945)=5*5 or x=1945+25=1970
@ghazi even initially i overlooked 55000 as 5500
sorry, that is where i made mistake, i thought its 5500 :)