Question
The population of a city, $P,$ in millions, is a function of $t,$ the number of years since $2010,$ so $P=f(t) .$ Explain the meaning of the statement $f(5)=7$ in terms of the population of this city.
Step 1
In this case, $P=f(t)$, where $P$ represents the population of the city in millions and $t$ represents the number of years since 2010. Show more…
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The population of a city, P, in millions, is a function of t, the number of years since 2010, so P = f(t). What does the statement f(10) = 5 mean in terms of the population of this city? In 2015 the population was 10 million. In 2020 the population was 5 million. 5 years from now the population will be 10 million. In 1915 the population was 10 million. In 1920 the population was 5 million.
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