Solve the problem.In 1971, 
and 
had the same population. The population of 
continued to increase steadily, while the rate of population growth of 
(although initially less than that of 
) eventually overtook the growth rate of City #2. The
populations of two cities are modeled by the following equations: 
: 
; 
: 
, where 
corresponds to the year 1971. In what year after 1971 did the cities have the same population?
A. 1976
B. 1975
C. 1974
D. 1977
Answer: A
Mathematics
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B. 
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; mixed number
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B. 6
C. 8
D. 7
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A. 
B. 5
C. 
D. 9
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