Question

Multiple Choice

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,

Answer 1

The answer is 1954. Letter C is correct
Solution:
If P(x) = 165,000
Then
165,000 = 55,000(x - 1945)^(1/2)
x= 1954

to check it, substitute x
165,000 = 55,000(1954 - 1945)^(1/2)
165,000 =165,000