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You can model the population of a certain city between 1945-2000 by the radical function P(x)=55,000 sqrt x-1945. Using this model, in which year was the population of that city 165,000?

A)1948

B)1951

C)1954

D)1957

Verified Answer :

165,000 = 55,000 square root (x-1955)
 divide both sides by 55000
 3 = sqrt(x-1945)
square
 9 = x - 1945

x= 1954
hope this helps 
option C is right

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