Concept explainers
The populations of two different cities are modeled by the equations shown below. The population (in thousands) is represented by
What year(s) did the cities have the same population? What was the population of both cities during the year(s) of equal population?
Baskinville:
Cryersport:
To find the years did the city have same population.
Answer to Problem 14P
The population is 1910000 in 2022 years
Explanation of Solution
Given information:
The equation is
Calculation: The equation can be obtained as
Substitute the value of y from equation 2 to equation 1
Solve the above equation by quadratic formula,
Therefore,
Solving for the corresponding y value using equation 2
Hence,
The population is 1910000 in 2022 years
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